Earth, the not-so-distant future. Cooper (Matthew McConaughey) scrapes a living as a farmer, dwelling on his past as a failed astronaut and dreaming of the day when the human race will reach for the stars once again. The future for his children, Murph (Mackenzie Foy) and Tom (Timothée Chalamet) looks bleak: years of drought have reduced the country to a dustbowl, with worse environmental catastrophe looming ahead.
The appearance of a strange gravitational phenomenon in his daughter’s room leads Cooper to a secret base, where he discovers the world’s best-kept secret. The NASA space program, thought long defunct, has been sending astronauts to a faraway galaxy through a newly discovered wormhole, in the hope of finding a viable new planet for mankind. Under the leadership of Professor Brand (Michael Caine) and his daughter Amelia (Anne Hathaway), this ‘Lazarus Project’ is about to launch its most ambitious mission yet – and Brand wants Cooper to be part of it.
Cooper leaves knowing that he may never see his children again. Even if he returns, the vagaries of special relativity will mean they’ve aged more rapidly than him. While he flies away through space and time in an attempt to save the world, a grown-up Murph (Jessica Chastain) must decide whether she can ever forgive him.