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Interstellar

In 2067, life on Earth is collapsing. NASA scientists Amelia Brand, Romilly, and Doyle are set to embark on an intergalactic mission to find life on other planets, after earlier missions—called Lazarus —reported habitable environments in faraway systems, accessible by a wormhole near Saturn. Former NASA pilot Cooper is led by coincidence (he refuses to term it supernatural) to the secret NASA facility where Amelia's father and mission leader, Professor Brand, convinces him to join.

Despite objections from his young daughter Murph, Cooper leaves to pilot the Endurance spacecraft. After a two-year voyage to Saturn, the spacecraft passes through the wormhole, emerging into a planetary system orbiting a supermassive black hole, Gargantua. Three planets, previously explored by Miller, Mann, and Edmunds, respectively, have shown signs of habitability. The first and closest, Miller's planet, turns out to be an ocean world with massive tsunamis. Doyle perishes on the planet, and Amelia and Cooper struggle to escape. They return to the Endurance after 23 Earth years have passed due to the extreme time dilation caused by the planet's proximity to Gargantua's gravity. Alone aboard the Endurance, Romilly significantly ages.

Their full mission compromised, the team decides to investigate Mann's planet, at the expense of ever visiting Edmunds' planet. While there, a message is relayed from Earth that Professor Brand has passed away. On his deathbed, Professor Brand told Murph, herself a scientist now, that the Endurance mission was never meant to return (since humanity's Earth existence is doomed). Murph feels betrayed that Cooper left knowingly, though he was misled as well. Cooper resolves to return, but Mann tries to stop him. It emerges that Mann falsified data of his planet's habitability, in hopes of being rescued. While he escapes, Romilly is killed in the process. Mann dies in space, leaving Amelia and Cooper as the lone survivors.

Aboard a damaged spacecraft with limited resources, Cooper proposes a gravitational slingshot around Gargantua to Edmunds' planet. This will save fuel but lose them time (50+ Earth years) due to time dilation. At the last moment, Cooper ejects from the Endurance, sacrificing himself so that Amelia can complete the mission. Cooper is sucked into the black hole, falling into an unusual tesseract, where time is a physical dimension. He sees himself decades ago inside Murph's bedroom and realises he can interact with objects there. Knowing Murph will return in her adult life, he encodes data about the black hole into the ticking of his old wristwatch (placed on Murph's bookshelf). After Professor Brand’s death, Murph visits her childhood bedroom, where she comes across Cooper's wristwatch. She deduces that the supernatural coincidence that led Cooper to NASA was Cooper himself (communicating from the future), and uses the wristwatch data to finish Professor Brand’s incomplete work. Cooper realizes that humans in the far distant future have built the wormhole and are arranging events, in a way analogous to how he is communicating with Murph, to create the sequence that will ultimately save mankind.

Cooper is ejected from the tesseract and is picked up in the future (his present) by a spacecraft orbiting Saturn. On a space station with a recreated healthy Earth environment, he is reunited with Murph. It is she who directed humanity's exodus from a dying Earth. Murph, now older than Cooper, who has a calendar (if not physical) age of 124, is surrounded by her descendants and does not want Cooper to witness her death. She suggests he seek out Amelia on Edmunds' planet. As Cooper sets out again, Amelia is shown discovering Edmunds' destroyed ship, and kneeling before a grave she's constructed for him. With Edmunds presumably dead, robots build a colony on the planet's surface, and Amelia removes her helmet to breathe in the air from the planet's atmosphere.