Crop blight has made growing food on Earth nearly impossible, threatening the existence of humanity. Joe Cooper, a widowed former NASA pilot, runs a farm with his father-in-law Donald, son Tom, and daughter Murphy. Murphy believes her bedroom is haunted by a poltergeist. When the "ghost" creates a pattern of dust on the floor, Cooper realizes an unknown intelligence is using gravity to communicate, and interprets the pattern as geographic coordinates, which Cooper and Murphy follow to a secret NASA installation.
There, they meet Dr. Brand, a college professor of Cooper's. Brand reveals that a wormhole, apparently created by an alien intelligence, appeared near Saturn 48 years ...view middle of the document...
Suddenly, a massive tidal wave strikes, killing Doyle and water logging the lander's engines; when Cooper, Amelia, and CASE return to Endurance, 23 years have elapsed for Romilly and Earth.
Murphy, now an adult, has been assisting Dr. Brand with his research. On his deathbed, he admits to her that he solved the equation long before and deemed Plan A impossible, and that he lied to everyone, pinning his hopes on Plan B. Murphy sends a message notifying Amelia of her father's death, then accuses her and Cooper of abandoning Earth. She continues researching, concluding that Plan A could work if somehow information could be obtained from observing Gargantua's singularity.
With limited fuel left, Cooper decides to go to Mann's planet, rather than Edmunds', as Mann is still transmitting. On arrival, they revive Mann, who has been in stasis. Mann assures the crew that while the frozen planet has an ammonia-laden atmosphere, the planetary surface is fit for human survival. However, when they are alone, Mann tries to kill Cooper, revealing that he falsified the data so he would be rescued. Mann then flees, intending to take the Endurance. Meanwhile, Romilly is killed by a booby trap Mann had set inside his own robot.
Amelia rescues Cooper, and they race to the Endurance, where Mann is attempting to dock. Mann defies Cooper's order not to open the airlock, which fails...