King Acrisius of Argos imprisons his daughter Danaë, jealous of her beauty. When the god Zeus impregnates Danaë, Acrisius banishes her and her newborn son Perseus to sea in a wooden chest. In retribution, Zeus kills Acrisius and orders Poseidon to release the last of the Titans, a gigantic sea monster called the Kraken, to destroy Argos. Danaë and Perseus safely float to the island of Seriphos, where Perseus grows to adulthood. Calibos, the malevolent son of the treacherous sea goddess Thetis, is betrothed to Princess Andromeda, daughter of Queen Cassiopeia of Joppa; but for committing several atrocities, including destroying Zeus' sacred flying horses (except for Pegasus), Calibos is transformed into a deformed monster to fit the ugliness of his evil heart. In revenge, Thetis transports an adult Perseus to an abandoned amphitheater in Joppa, where he befriends a soldier, Thallo, and an elderly poet named Ammon. Perseus learns that Andromeda is under a curse and cannot marry unless her suitor successfully answers a riddle concocted by Calibos. Zeus sends Perseus a god-crafted helmet which is from Athena which makes its wearer invisible, a magical sword which is from Aphrodite, and a shield which is from Hera. After capturing Pegasus, Perseus follows Calibos's giant vulture carrying off Andromeda's spirit during her sleep to learn the next riddle. Perseus is discovered and nearly killed by Calibos. In the ensuing fight, Calibos loses his left hand, and Perseus loses his helmet. The next morning, Perseus presents himself as a suitor and correctly answers the riddle—the answer is the ring given to Calibos by his mother which is still attached to the amputated hand—winning Andromeda's hand in marriage. Finding out that Thetis cannot act directly against Perseus, Calibos instead demands that she take vengeance on Joppa by unleashing the Kraken upon it. At the wedding in Thetis' temple, Cassiopeia declares that Andromeda's beauty is greater than Thetis'. Thetis, using the statue's head to speak through, declares that Cassiopeia will pay for her boasting and for the injury inflicted on Calibos and demands that Andromeda will be sacrificed to the Kraken on pain of Joppa's destruction. Perseus seeks a way to defeat the Kraken. However, Pegasus is captured by Calibos and his men. Zeus commands Athena to give Perseus her owl Bubo, but she refuses. Instead, she orders Hephaestus to build a mechanical replica that leads Perseus, Andromeda, Ammon, Thallo, and some soldiers to the Stygian Witches. By taking their magic eye, Perseus forces them to reveal that the only way to defeat the Kraken is by using the head of the Gorgon Medusa, whose gaze can turn any living thing into stone. Medusa lives on an island in the River Styx at the edge of the Underworld. The next day, Perseus and the soldiers continue on their journey while Andromeda and Ammon return to Joppa. Thallo stays behind, but gives Perseus a coin as a fee for the skeletal ferryman, Charon. On the Gorgon's island, the three soldiers traveling with Perseus are killed. Perseus fights and kills Medusa's guardian, a two-headed dog named Dioskilos. At the Gorgon's lair, Perseus uses the reflective underside of his shield to deceive Medusa, decapitate her, and collect her head. However, Perseus's shield is dissolved by her caustic blood. As Perseus and his fellow soldiers set to return, Calibos enters their camp and punctures the cloak carrying Medusa's head, causing her blood to spill and produce three giant scorpions, which attack the soldiers. One soldier is killed by a scorpion, but Perseus and Thallo kill all three scorpions. Thallo is then killed by Calibos, who attacks Perseus with his whip, but Perseus manages to overcome and kill him. Alone and weakened by his struggle, Perseus sends Bubo to rescue Pegasus from Calibos' henchmen. After reaching the amphitheater in Joppa, Perseus collapses from exhaustion. Andromeda is shackled to the sacrificial rock outside Joppa, and the Kraken is summoned. Bubo distracts the beast until Perseus, whose strength was secretly restored by Zeus, appears on Pegasus. Using Medusa's head, Perseus petrifies the Kraken, causing it to crumble to pieces. Perseus tosses the head into the sea, frees and marries Andromeda. The gods predict that Perseus and Andromeda will live happily, rule wisely, and produce children, and Zeus forbids the other gods to pursue vengeance against them. The constellations of Perseus, Andromeda, Pegasus and Cassiopeia are created in their honor.

Jess prepares to take her autistic son Tommy on a boat trip with her friend Greg. When Tommy becomes upset, she tells him that he just had a bad dream. Jess goes to a Florida harbor without Tommy, explaining that he is at school, and boards Greg's boat with his deckhand Victor, his married friends Sally and Downey, and Sally's friend Heather. On the boat she has a dream about crabs on a beach, and wakes up disturbed, but then she forgets what disturbed her. At sea, a storm approaches, and while Greg radios the Coast Guard, he listens to a distress signal from a woman pleading for help. She says that someone is killing everyone but is cut off before she can provide her location. The sudden storm capsizes the boat. Heather is swept away, but the others climb onto the overturned sailboat when the storm clears. The five survivors board a passing ocean liner, the Aeolus. It appears to be deserted even though they saw the silhouette of a person aboard. Jess experiences a sense of déjà vu as they explore the ship. They find Jess's keys and fresh food in the dining room. Jess spots someone watching them and Victor gives chase. Jess and Greg find the words "go to theater" written in blood on a mirror, but Greg insists the crew must be playing a prank. Jess returns to the dining room, where the food is now rotting. Victor, with a head wound, tries to strangle Jess, but she fights him, and he collapses. Jess hears gunfire and follows it to the ship's theater, where Greg lies dead from a gunshot. Sally and Downey say that Greg told them Jess shot him. Someone in a burlap mask shoots Sally and Downey. Jess runs, grabs an ax and disarms the shooter, who tells her, "You have to kill them; it's the only way to get home" before Jess knocks her overboard. Jess hears yelling and sees another copy of her group on Greg's boat, who spot her (as the earlier unidentified figure). This new set of passengers boards the ship. They spot her after she drops her keys, and she attempts to warn the new Victor when he chases her, only to accidentally injure his head on a wall hook. She finds dozens of her own lockets and notes in her own handwriting telling her to kill them all. She takes a shotgun and confronts the new group, intending to "change the pattern", but a third Jess shoots the new Greg and stabs the new Downey and Sally. The old Jess chases the new Sally, who sends the distress signal heard on Greg's boat. Jess catches up to her on a deck filled with dozens of Sally's corpses, and Sally succumbs to her wound as, below them, the new Jess kills the third Jess. The overturned boat returns again with another copy of her group, and the old Jess realizes the loop restarts once everyone is killed. Desperate to stop the loop, she sets the loop into motion by writing on the mirror in blood, dumping bodies overboard, and telling the latest Sally and Downey to go to the theater. She then arms herself, dresses in the shooter's outfit, and puts on a burlap mask. After she shoots the latest group and is disarmed, she urges the latest Jess to kill everyone, before being knocked overboard. She awakens near crabs on a beach, having washed ashore, and she discovers that it is earlier that morning. She returns home and watches from outside her house as her earlier self yells abusively and strikes Tommy out of frustration with his autism. She distracts her counterpart with the doorbell, then kills her, and tells Tommy that he just had a bad dream. She puts the bagged body in her car's trunk and leaves with Tommy, vowing to him that things will change. A seagull hits their windshield and dies, but after she tosses it off the road, she sees there's a pile of many dead seagulls. Realizing she is still trapped in the loop, Jess hurriedly drives away, but crashes into a truck, killing Tommy. A taxi driver approaches her. Jess asks him to take her to the harbour, evidently hoping to bring back her son. The driver tells her he will wait for her, and she promises him that she will return. Exhausted, she joins the others on Greg's boat, starting the loop again.

In a dystopian near future, Cassius "Cash" Green and his artist girlfriend Detroit live in the garage of Cash's uncle Sergio. Struggling to pay rent, Cash gets a job as a telemarketer for RegalView. He struggles with customers until his older co-worker Langston teaches him how to use his " white voice " and adopt a blithe, affluent persona during calls, at which Cash excels. Cash's co-worker Squeeze forms a union and recruits Cash, Detroit, and their friend Sal. When Cash participates in a protest, he expects to be fired but is instead promoted to an elite "Power Caller" position within the company. In the luxurious Power Caller suite, the lead Power Caller known as Mr. _______ tells Cash to always use his white voice. He learns that RegalView secretly sells military arms and cheap labor from the megacorporation WorryFree, through which employees sign lifetime contracts to work and be housed in factories, i.e. slave labor. Though Cash is initially uncomfortable with the job, he is celebrated at work and can now afford a new apartment and a flashy car while paying off Sergio's house, keeping him from joining WorryFree in the process. Through his newfound success, he initially improves his relationship with Detroit and boosts his sex life significantly. He stops participating in the union push and Detroit quits her RegalView job to avoid conflicting loyalties between the two, while secretly participating in the Left Eye Faction, an anti-WorryFree activist group. She eventually breaks up with Cash, arguing that his immoral job has changed him, while he insists he has the right to be proud of his success. As Cash is escorted through the union's picket line one morning, a picketer throws a can of soda at his head and injures him. Footage of the incident becomes a popular Internet meme, and even the woman who threw the can profits from it when she signs a sponsorship with the soda brand she threw. Cash attends Detroit's art exhibit and artistic performance uninvited, at which she uses a white voice of her own. He tries to stop the event, but that only motivates Detroit to kick him out, and she later has "everything but sex" with Squeeze. Cash is invited to a debaucherous party with WorryFree CEO Steve Lift, where he is goaded into rapping for the predominantly white guests. Later, in a private meeting, Steve offers Cash a powdered substance which Cash snorts, believing it is cocaine. Cash looks for the bathroom but takes a wrong turn and discovers a shackled half-horse, half-human hybrid who begs him for help. Steve explains that WorryFree plans to make their workers stronger, more obedient, and more profitable by transforming them into human-horse "Equisapiens" through snorting a powder that modifies their DNA. Cash fears that he just ingested the substance, but Steve assures him it was cocaine. Cash refuses an offer of $100 million to become an Equisapien for five years to act as a false revolutionary figure to keep the employees in line. Cash discovers he dropped his phone when he encountered the Equisapiens, who recorded a plea for help with it and sent it to Detroit. Taking advantage of his infamy as a meme, he appears on the extremely popular television show I Got the Shit Kicked Out of Me, where he endures humiliations and beatings in order to share the video to spread the word about WorryFree's cruelty. The plan backfires: Equisapiens are hailed as a groundbreaking scientific advancement, a cult of personality develops around Steve, and WorryFree's stock price reaches an all-time high. Cash apologizes to Squeeze, Sal, and Detroit, and rallies the union in a final stand against RegalView. He uses a security code from the Equisapiens' video to break into Steve's home. He goes to the picket line, where the police start a riot and detain him, but the Equisapiens overpower them and free him. Cash and Detroit reconcile and move back into Sergio's garage, once again poor but happy together. However, Cash suddenly starts to turn into an Equisapien, with Steve having lied to him about the cocaine. Sometime later, a fully transformed Cash leads a mob of other Equisapiens to Steve's house and breaks down the door.

Fletcher Reede is a divorced defense lawyer living in Los Angeles who loves spending time with his young son, Max. However, he has a habit of giving inappropriate precedence to his career, breaking promises to Max and his ex-wife Audrey, and then lying about the reasons. After Fletcher misses Max's 5th birthday party when senior partner Miranda lures him into having sex in the office to land a promotion, Max makes a birthday wish for Fletcher to be honest for one day. Fletcher soon discovers that he is unable to lie, mislead, or withhold the truth. This alienates him from Miranda and his secretary Greta, gets his car impounded when he confesses all of his traffic infractions and unpaid parking tickets to a police officer, and causes him an inability to bend the truth in court. Fletcher's newest client is Samantha Cole, a gold digger who wants to get around a pre-nup with her soon-to-be ex-husband, Richard Cole. The main witness, Kenneth Falk, with whom Samantha has been cheating, is eager to lie when he takes the stand. However, Fletcher finds in court that his inability to lie includes not being able to suborn perjury. Meanwhile, Audrey is considering a move to Boston with Jerry, who proposed upon receiving a job offer there. Although they have not been together long, she accepts, to protect Max from future disappointments that Fletcher may cause him. Catching wind of Fletcher's inability to lie, Miranda tries to get him fired by baiting him into insulting Mr. Allan, a senior partner at the firm, but this fails when Mr. Allan and his board mistake Fletcher's accurate insults for lighthearted roasting. Fletcher tries to delay the case by staging an assault on himself in the men's room, but he is unable to lie his way into a continuance, specifically because his only possible grounds were, "I can't lie." Knowing that he cannot refute the proof of Samantha's adultery, her grousing accidentally reveals her real age. He successfully disputes the validity of her prenup, signed as a minor without parental consent. The judge rules Samantha is entitled to 50% of Richard's marital assets, allowing Fletcher to win the case truthfully. However, Samantha then pivots to demanding custody of their children for extra child support payments. Fletcher watches as she pulls her crying children out of Richard's arms. Horrified by the outcome his actions have caused, he overreacts and demands the decision be reversed. The judge thinks Fletcher is mocking him and holds him in contempt. Fletcher calls Audrey to bail him out, but she informs him that their plane leaves for Boston that night. Greta, realizing he turned over a new leaf, pays his bail. Fletcher rushes to the airport, but Audrey and Max's plane has left the gate. In desperation, he hijacks a mobile stairway to pursue the plane onto the runway. He keeps his promise to greet Max before takeoff, through a plane window, and gets the plane to stop but is injured. On a stretcher, Fletcher vows to Max that he will spend more time with him. He says that despite the fact that he is free to lie now that the 24 hours have elapsed, it feels clearer to be honest. Max believes him, and Audrey, encouraged by Jerry, decides to remain in California. One year later, Fletcher and Audrey are celebrating Max's 6th birthday. Max makes a birthday wish, only to find that Fletcher and Audrey are kissing when the lights come back on. Fletcher asks Max if he wished for them to get back together, but he says he only wished for rollerblades.

A group of students from Volda University College, Thomas, Johanna, and their cameraman Kalle, set out to make a documentary about a suspected bear poacher, Hans. At the site of an illegally slain bear they interview local hunters, who comment that the bear tracks look odd. Finn Haugen, head of the Norwegian Wildlife Board, dismisses the idea that the bear tracks could have been faked. The students follow Hans in an attempt to secure an interview but he continually rebuffs them. Following him into a forest at night time, they see flashing lights and hear roars. Hans comes running back, screaming "Troll!" Thomas is bitten by something as they run away. After finding their own vehicle destroyed, they escape in Hans's Land Rover. Hans reveals he is not hunting bears, but trolls. The students ask for permission to interview him and film his hunt, to which he consents on the condition that they do exactly as he instructs. The next day, Hans asks if any of them believe in God or Jesus, because a troll can smell a Christian man's blood. Hans wields a "flash-gun", a weapon that emits powerful UV-rays to simulate sunlight and turns trolls to stone, or makes them "just explode" depending on how old they are. Hans flushes out a giant three-headed troll and manages to turn the troll to stone. He explains that he only allowed them to come along because he's tired of working for little compensation and wants them to divulge the truth. Finn's team, who actually works for the Troll Security Service (TSS), arrives to deposit a bear carcass and plant fake tracks. Finn tells the students their tapes will be confiscated. During interviews, Hans reveals that his job is to kill trolls that come near populated areas, while Finn's is to keep trolls a secret. He reveals that the trolls have been acting aggressively lately and have begun to leave their territories more often. He plans to get a troll blood sample to determine why. Using live goats on a bridge as bait, Hans obtains a blood sample from a bridge troll. He takes it to a TSS veterinarian, who informs him it will take several days for results. Investigating a farm, Hans and the students find tracks leading into an abandoned mine, which turns out to be the lair of cave trolls. The cave trolls return unexpectedly and the group is trapped inside. The trolls pick up the scent of Kalle, who turns out to be a Christian, and discover the group. Everyone runs for the cave entrance into daylight, but Kalle is caught and killed. The students get a replacement camerawoman, Malica. Finn demands that Hans head north to troll territory to get the problem under control. The group finds signs of a Jötunn, a giant mountain troll 50–100 metres tall. Thomas, who was bitten a few days ago, falls ill, and they learn that the troll blood sample came back positive for rabies. After several attempts, Hans manages to kill the Jötunn by launching a rocket-like projectile that transforms the troll into stone. Before doing so, he directs the others to find the highway. Finn and his TSS-agents arrive to confiscate the students' tapes. Thomas flees with the camera and ends up at the side of a road, with a truck oncoming, when the footage ends. An epilogue tells the audience that none of the students were heard from again. The film ends with a news-clip of the Norwegian Prime Minister Jens Stoltenberg appearing to admit to the existence of trolls, though the press fails to take notice.

The film follows the lives of a small family living in the Chernobyl Exclusion Zone, a desolate and radioactive area abandoned after the 1986 nuclear disaster. The family is led by Baba Prisya, an elderly woman who believes in the supernatural and claims to communicate with rusalkas (water spirits from Slavic folklore). She lives with her daughter Slava, who is in poor health and has been abandoned by her husband, and her grandson Vovchyk, a young man who is shy and fearful of the outside world. Their secluded life is suddenly disrupted one day when Baba Prisya experiences a mystical vision. She is warned by an unknown entity about an impending personal catastrophe that will soon affect her and her family. Believing the warning to be true, Baba Prisya takes it as her mission to prevent the disaster, but her family is skeptical of her visions and beliefs. One day, Vovchyk ventures out into the surrounding wilderness to gather objects from the Exclusion Zone, against his grandmother’s warnings. During this trip, he encounters Vasya, a local policeman, who brings food and supplies to the family. Vasya, who believes the area is dangerous due to the radiation and the presence of bandits, advises the family to leave the zone. Baba Prisy refuses to leave, however, convinced that the radiation is a myth and that the real threat is something much more sinister. As Baba Prisya’s visions intensify, she becomes more obsessed with preventing the foretold catastrophe. She becomes increasingly erratic, convinced that the disaster is tied to extraterrestrial forces that have infiltrated the government. According to her beliefs, the Chernobyl disaster was orchestrated to drive people out of the area and pave the way for a base to communicate with these otherworldly beings. She insists that the government’s evacuation was a cover-up and that the radiation is a distraction from the true danger. The family’s tensions rise as Baba Prisya takes more drastic steps to prevent the catastrophe, including performing strange rituals and consuming a rare mushroom she believes will open a "gateway" to reveal hidden truths. This leads to surreal, nightmarish sequences, where reality and Baba Prisya’s delusions begin to blur. At one point, the family experiences vivid hallucinations, further complicating their understanding of what is real. As the family struggles to understand the meaning of Baba Prisya’s warnings, it becomes clear that her connection to the supernatural may have been stronger than they had thought. In the final act, the mystical warning comes to fruition when an unforeseen disaster strikes the family, leading to tragic consequences. The film ends on an ambiguous note, leaving viewers to question whether Baba Prisya’s beliefs were valid, or if the events were merely the product of her deteriorating mental state.

The film is a farce about a mentally unstable advertising executive, Denis Dimbleby Bagley (played by Grant), who suffers a nervous breakdown while making an advert for pimple cream. Rachel Ward plays his long-suffering but sympathetic wife, Julia Bagley. Richard Wilson plays John Bristol, Bagley's boss. Bagley has a crisis of conscience about the ethics of advertising, which leads to mania. He then develops a boil on his right shoulder that comes to life with a face and voice. The voice of the boil, although uncredited, is that of Bruce Robinson. The boil takes a cynical and unscrupulous view of the advertising profession in contrast to Bagley's new-found ethical concerns. Eventually, Bagley decides to have the boil removed in hospital, but moments before he is taken into the operating room, the boil quickly grows into a replica of Bagley's head (only with a moustache) and covers Bagley's original head, asking doctors to lance it, which is done since nobody has noticed the switch from left to right nor the new moustache. Bagley, now with the boil head, moustache, and personality (the movie's third personification from Grant after the stressed executive and the raving lunatic) returns home to celebrate his wedding anniversary, with the original head merely resembling a boil on his left shoulder. The "boil" eventually withers but doesn't die, yet Bagley resumes his advertising career rejuvenated and ruthless, although without his wife, who decides to leave his new cruel persona.

Sophie, a teenage girl, has a dream in which she sees a man raking leaves by a swimming pool. She suddenly starts floating up to the sky and cries out to the man for help, revealing that he is her father Paul, a professor of evolutionary biology at a local university. When Paul learns that a former colleague is writing an article on a topic he had discussed with her many years earlier, he seeks to confront her but instead begs her for some recognition. Paul's journalist ex-girlfriend Claire spots him with his wife Janet and tells him he appears in her dreams. With his permission, she writes an article about the experience. Soon, hundreds of strangers come forward to name Paul as the man they see in their dreams. Paul enjoys the media coverage this brings, but is frustrated by consistently being depicted in the dreams as passive and uninteresting. In interviews with some of his students, he learns that their dreams sometimes feature disasters occurring or the dreamers asking Paul for help, only for him to remain emotionless and unhelpful. Janet asks Paul why he does not appear in her dreams, and describes her fantasy of Paul rescuing her while wearing the oversized suit worn by David Byrne in the 1984 Talking Heads concert film Stop Making Sense. Later that evening, a mentally ill man who has seen Paul in his dreams breaks into their house with a knife, raising concerns about the risks of his fame. Paul meets with a PR firm in the hopes of securing a book deal, but they instead attempt to convince him to advertise Sprite on social media. Molly, a young assistant at the firm, tells Paul that she has erotic dreams about him; he attempts to re-enact them for her, but prematurely ejaculates and leaves her apartment in shame. Paul is enraged to learn that his former colleague has published a high-profile paper on the subject about which he was thinking of writing his book. His presence in people's dreams becomes violent and sadistic, and he becomes vilified, being placed on leave after students refuse to attend his classes. Bystanders are bothered by his presence in public, resulting in a brawl at a diner. After Janet's career is affected, she asks Paul to issue a public apology, but he angrily refuses. Paul has a nightmare in which he is hunted and killed by a version of himself wielding a crossbow and subsequently releases a self-pitying apology video. Humiliated, Janet throws him out of the house. Paul forces his way into his daughter's school play but accidentally injures a teacher in the process and is restrained, becoming further vilified. Some time later, Paul ceases to appear in people's dreams. His own dream experience is revealed to have led to the discovery of a shared subconsciousness, and dreams have become an advertising space through the use of technology. Janet is separated from Paul and is dating a co-worker. Paul travels to France for a book tour to promote his book Dream Scenario, which he learns has been retitled Je suis ton cauchemar (I Am Your Nightmare) without his consent. The book is pitifully thin in the translated volume and his signing event has been moved to the dingy basement of the bookstore. Nevertheless, fans line up for his signed copies. Paul uses "dream travel" technology to enter one of Janet's dreams and rescue her while wearing the oversized suit. As he floats away, much like Sophie did in her first dream, Paul declares that he wishes the dream were reality.

A demon chases America Chavez and a variant of Stephen Strange in the space between universes while searching for the Book of Vishanti. Strange is killed and Chavez accidentally creates a portal that transports herself and Strange's corpse to Earth-616, where that universe's version of Stephen Strange rescues Chavez from another demon with help from Wong, the Sorcerer Supreme. Chavez explains that the beings are hunting her because she has the power to travel through the multiverse, but is unable to consciously control it. Recognizing witchcraft runes on the demon, Strange consults Wanda Maximoff but soon realizes that she is responsible for the attacks. After acquiring the Darkhold and becoming the Scarlet Witch, Wanda believes that taking Chavez's powers and traveling through the multiverse will allow her to reunite with Billy and Tommy, the children she created during her time in Westview. When Strange refuses to surrender Chavez, Wanda attacks Kamar-Taj and kills many sorcerers. Chavez accidentally transports herself and Strange to Earth-838. Wanda uses the Darkhold to " dreamwalk ", taking control of her Earth-838 counterpart who lives a suburban life with her own Billy and Tommy. After a surviving sorceress, Sara, sacrifices herself to destroy the Darkhold and break the dreamwalk, an enraged Wanda forces Wong to lead her to Mount Wundagore, the source of the Darkhold ' s power, to reestablish the dreamwalk. While searching for help, Strange and Chavez are apprehended by Earth-838's Sorcerer Supreme, Karl Mordo, and brought before the Illuminati, a group consisting of Mordo, Peggy Carter, Blackagar Boltagon, Maria Rambeau, Reed Richards, and Charles Xavier. They explain that through reckless use of their universe's Darkhold in an attempt to defeat Thanos, Earth-838's Strange triggered a universe-destroying " incursion ". After defeating Thanos, the Illuminati executed their Strange to prevent him from causing more harm. Mordo believes that Earth-616's Strange is similarly dangerous, but Wanda reestablishes her dreamwalk at Mount Wundagore and arrives in her Earth-838 counterpart's body before the Illuminati can pass judgment. She brutally kills all the Illuminati except Mordo, whom Strange subdues before fleeing with Chavez. The two escape with help from the Earth-838 version of Strange's ex-fiancé, Christine Palmer, a scientist working with the Illuminati. Strange, Chavez, and Palmer enter the space between universes to find the Book of Vishanti, which is the antithesis of the Darkhold, but Wanda appears and destroys it. She then takes over Chavez's mind and uses her powers to send Strange and Palmer to an incursion-destroyed universe. Strange defeats the destroyed universe's Strange, who has been corrupted by his Darkhold, and then uses that Darkhold to dreamwalk into the body of his deceased counterpart on Earth-616. With Wong's help, Strange saves Chavez from Wanda and encourages Chavez to use her abilities. Chavez transports Wanda to Earth-838, where she sees Billy and Tommy fearfully recoiling from her while crying for their real mother. Realizing her errors, Wanda relents and uses her powers to bring down Mount Wundagore, simultaneously destroying all copies of the Darkhold throughout the multiverse and sacrificing herself in the process. Chavez returns Strange and Palmer to their respective universes. Some time later, Kamar-Taj is under repair and the surviving sorcerers, joined by Chavez, continue training. Strange develops a third eye as a result of using the Darkhold and dreamwalking into a corpse. In a mid-credits scene, Strange is approached by a sorceress who warns that his actions have triggered an incursion that he must help repair. Strange follows her into the Dark Dimension.

Particle physicists and estranged friends Abby Yates and Erin Gilbert co-authored Ghosts from Our Past, a book detailing their paranormal investigations since high school. Erin later disavowed the work, while Abby continues her research at the Kenneth P. Higgins Institute of Science in Manhattan, with engineering physicist Jillian "Holtz" Holtzmann as her partner. Now a professor at Columbia University and in line for tenure, Erin, discovering that Abby republished their book, convinces her to cease its publication if she helps Abby and Holtzmann investigate a haunting at the Aldridge Mansion. They encounter the malevolent ghost of the family’s eldest daughter before she escapes, restoring Erin's belief in the supernatural and friendship with Abby. Erin loses her bid for tenure at Columbia after their vlog becomes viral. Erin offers to join Abby and Holtzmann as the latter are dismissed from Higgins Institute. After stealing equipment, they establish temporary headquarters above a disused Chinese restaurant. They verbosely name themselves "Conductors of the Metaphysical Examination", build trappings and hire jock Kevin Beckman as a receptionist. MTA staffer Patty Tolan encounters a ghost in a subway terminal built under a former prison and contacts the team. They find the ghost and test Holtzmann's prototype proton packs on the entity, but fail to capture it. They advertise their services with a "no ghosts allowed" logo that Holtzmann had based on a graffiti artist's defacement and the name pundits have labeled them "Ghostbusters". Patty joins the team, providing city expertise, PPE and a repurposed hearse from her uncle dubbed " Ecto-1 ". Mad scientist and occultist Rowan North has triggered supernatural events by attracting ghosts across Manhattan with self-developed ionizers modeled after the Ghostbusters' technology, allowing him to experiment and create a dimensional vortex powered by turned PSI energy. When Rowan plants another device at a music festival, the Ghostbusters are called and capture a demonic ghost there, becoming city sensations but antagonizing him. When debunker Doctor Martin Heiss challenges the quartet, Erin releases the ghost as evidence; it throws him out of a window and escapes. The group is brought before Mayor Bradley and his deputy, Jennifer Lynch, who reveal that they and the DHS are aware of the city's supernatural activities. While privately acknowledging the team's work, they publicly denounce them as fraudsters. The Ghostbusters realizes Rowan is planting his devices along ley lines, with their alignments intersecting at the Mercado Hotel in Times Square, a site of violent occurrences where Rowan's vortex will breach the netherworld, potentially triggering an apocalypse. When they confront him in the building's basement, Abby warns him of apprehension, but unwilling to turn himself in, Rowan electrocutes himself with his main machine. After deactivating it, Holtzmann finds an annotated copy of Ghosts from Our Past that explains the similarity between their technologies. Erin later discovers that Rowan planned his suicide to become a ghost himself. Rowan returns as a deity-like ghost and attacks the Ghostbusters at their headquarters by possessing Abby, but Patty thwarts him. He then possesses Kevin, escapes to the hotel, opens the portal and releases galvanized ghosts. Rowan subdues the authorities, but the Ghostbusters fight through his army to reach the portal. After leaving Kevin's body, Rowan takes on a kaiju -sized form based on the ghost in the Ghostbusters' logo and becomes rampant. The team uses the Ecto-1's nuclear reactor to incite a nuclear explosion inside the vortex; it reverses the portal, forcing Rowan and the ghosts back in and saving the city. Rowan attempts to take Abby with him, but Erin leaps into the portal and rescues her. Despite the city's fascination with the supernatural and its lauding of the Ghostbusters as heroes, the mayor continues to denounce them publicly while covertly funding their operations. With added resources, the Ghostbusters move to a disused firehouse, where they build more equipment, including an ecto-containment system. While investigating EVP, Patty hears the word " Zuul ".

Shortly after the Battle of Starkiller Base, General Leia Organa and the Resistance are evacuating their base when the First Order fleet arrives. Against Leia's orders, Poe Dameron leads a costly counterattack that destroys a First Order dreadnought. The remaining Resistance escapes into hyperspace, but the First Order uses a device to track them and attacks again. Kylo Ren hesitates to fire on the lead Resistance ship after sensing his mother Leia's presence on board, but his wingmen destroy the bridge, killing most of the Resistance's leaders. Leia is dragged into space but survives by using the Force. While Leia recovers, Vice-Admiral Holdo assumes command of the Resistance. Running low on fuel, the remaining fleet is pursued by the First Order. On Ahch-To, Rey attempts to recruit Luke Skywalker to the Resistance. Under self-imposed exile, Luke refuses to help, believing that the Jedi should end. After encouragement from R2-D2, he agrees to give Rey three lessons in the ways of the Force. During training, Rey and Kylo begin communicating through the Force, which puzzles them both. Kylo tells Rey that Luke feared his power; Luke confesses that he momentarily contemplated killing Kylo upon sensing that Snoke was corrupting him, which prompted Kylo to destroy Luke's new Jedi Order. Convinced that Kylo can be redeemed, Rey leaves Ahch-To. Luke prepares to burn the Jedi library but hesitates. The spirit of Luke's master Yoda appears and destroys the library by summoning a bolt of lightning. He encourages Luke to learn from his failure. Meanwhile, Poe entrusts Finn, mechanic Rose, and BB-8 with a secret mission to disable the First Order's tracking device. Maz Kanata directs them to the casino town of Canto Bight, where they meet the hacker DJ. Pursued by the local security, they escape Canto Bight with the help of stablehand children and racing animals they set free. Finn, Rose, and DJ infiltrate Snoke's flagship but are captured by Captain Phasma. Kylo brings Rey to Snoke, who claims that he connected their minds to discover Luke's whereabouts. Holdo plans to evacuate the remaining members of the Resistance using small transport vessels. Believing her plan cowardly and futile, Poe leads a mutiny. A recovered Leia stuns Poe with a blaster and proceeds with the evacuation. Holdo remains aboard the ship as a decoy to mislead Snoke's fleet as the others flee to an abandoned base on Crait. DJ buys his freedom by revealing the Resistance's plan to General Hux, and the First Order fleet begins firing on the evacuation transports, destroying many. Ordered to kill Rey, Kylo instead kills Snoke and they work together to defeat his Praetorian Guard. Rey hopes that Kylo has abandoned the dark side, but he instead asks her to rule the galaxy with him. Refusing, she battles him for control of Luke's lightsaber, bisecting the weapon. Holdo sacrifices herself by slicing through Snoke's flagship at lightspeed, crippling the First Order fleet. Rey escapes the destruction while Kylo declares himself Supreme Leader. BB-8 frees Finn and Rose; they fight and defeat Phasma and join the survivors on Crait. When the First Order arrives, Poe, Finn, and Rose attack with obsolete speeders. Rey and Chewbacca draw TIE fighters away in the Millennium Falcon, while Rose stops Finn from sacrificing himself. The First Order penetrates the Resistance fortress using a siege cannon. Luke appears and confronts the First Order, allowing the surviving Resistance to escape. Kylo orders the First Order's forces to fire on Luke, but they fail to harm him. He then engages Luke in a lightsaber duel; upon striking Luke, Kylo realizes that Luke is not physically present but projecting his image through the Force. Rey helps the remaining Resistance escape on the Falcon. Exhausted, Luke dies peacefully on Ahch-To, becoming one with the Force. Rey and Leia sense his death, and Leia tells Rey that the Resistance can rise again. At Canto Bight, the stablehands recount the story of Luke Skywalker; afterward, one of them moves a broom with the Force and gazes into space.

The film begins with a businessman, John Sullivan (Chris Kelly), in a hurry to get into his car. He appears to be severely stressed as he begins driving down the city streets. When he goes through a lighted intersection he is broadsided by another driver that is distracted by hot coffee in his lap. As he falls unconscious, he dreams of playing with his young daughter, Emma (Quinn Hunchar). Emma pretends to be kidnapped and tells John to "save" her from the "monster", although John seems exasperated and tells her to have her mother do it instead. Eventually, however, John gives in and runs to "save" his daughter, while Emma laughs and embraces him. It is revealed that dreams are controlled by beings from an alternate plane of reality. The beings are spirits of deceased people from Earth and are divided into distinct groups: Storytellers (bearers of good dreams), Incubi (cause of nightmares), and Drifters (those in a state of limbo who cause neither good nor bad dreams). As the Storytellers and Incubi perform their daily work in the night, a Drifter known as Ink goes to Emma's room and removes her soul from her body. Although a number of Storytellers try to prevent the action, Ink escapes with the girl's soul into the dreamworld, leaving Emma's body unconscious. However, in the dreamworld, Ink is unable to open a portal to the Incubi's headquarters, where he intends to take Emma's soul. He is told that he must find and barter with two other Drifters to acquire parts of a code that will enable him to achieve entry into the headquarters. Meanwhile, John, whose life has attained a sense of repetition and perfection, faces turmoil when an account he has been working to acquire is about to be swept out from under him. Soon after, Ron Evans (Steve Sealy), John's estranged father-in-law, comes to inform John that Emma is in a coma and has been placed in a hospital. Although Ron begs John to go and see the girl, John refuses and berates Ron, saying that the father-in-law turned the world against him. Shortly after, Ron is ordered out of John's office. It is revealed that Ron and his wife were given custody of Emma after the death of John's wife Shelly (Shannan Steele) in a car accident, due to John's grief-induced addiction to alcohol and drugs. At the same time in the dreamworld, the Storytellers Allel, Gabe, and Sarah (played by Jennifer Batter, Eme Ikwuakor, and Shelby Malone, respectively) work to find a way to awaken Emma. In order to do this, they receive the help of Jacob (Jeremy Make), an eccentric blind spirit known as a "Pathfinder". Meanwhile, a Storyteller named Liev (Jessica Duffy) confronts Ink and attempts to discourage him from delivering Emma to the Incubi. After Ink threatens to murder Emma if Liev continues to pursue him, Liev surrenders to Ink as a prisoner. It is revealed that Ink is taking Emma's soul to the Incubi in order to become one of them and cease to be a Drifter. Soon after, Ink successfully barters with two Drifters for parts of the code. As Ink's prisoner, Liev tries to bolster Emma's bravery in order to thwart Ink. During this time, the Pathfinder Jacob unveils his abilities to the Storytellers: tapping into the "beat of the world" in order to cause physical changes that affect the course of time. Through a chain of events, Jacob causes several small accidents that culminate in a truck running a red light and crashing into John's car, revisiting an opening scene of the film. Due to his injuries, John is taken to a hospital, which turns out to be the same hospital where Emma is checked in. After recalling his happiness before his wife died, John walks to Emma's room, guarded by Allel as an unseen battle ensues between the Storytellers and Incubi. In the dreamworld, Liev discovers that Ink arrived after his human counterpart committed suicide. Ink, being ashamed of his hideous and scarred appearance, believes the Incubi will help him, the Incubi having been revealed to all wear apparati that project facades of bliss and happiness to hide their misery. After making their way to the stronghold of the Incubi, Ink offers Emma and Liev as his payment to the leader. As Liev attempts to stand up to the leader of the Incubi, she is mortally wounded. While dying, Liev pleads with Ink to "remember". Suddenly, Ink has a revelation: he recalls that Emma died in the hospital without her father's presence; and John, driven to further depression and regret, shot himself in despair, at which time his soul entered the dreamworld and became the Drifter known as Ink. Ink understands that he is, in fact, John Sullivan's soul from a future in which Emma dies and he does not visit her at the hospital due to time flowing differently in the dreamworld. In this realization, Ink rushes at the Incubi and kills them to rescue his daughter, mirroring the dream scene in the beginning of the film. After the fight is over, Emma's soul embraces Ink, realizing that it is her father. In the normal world, Pathfinder Jacob activates a device that calls the other Storytellers as reinforcement, with the onslaught of Storytellers defeating the Incubi. John finally makes his way to Emma's room. The film closes as Emma awakes to find her father at her bedside.