"Sam Bell is nearing the completion of his 3-year-long contract with Lunar Industries, mining Earth's primary source of energy on the dark side of the moon. Alone with only the base's vigilant computer Gerty as his sole companion, Bell's extended isolation has taken its toll. He longs to return home, but a terrible accident on the lunar surface leads to a disturbing discovery that contributes to his growing sense of paranoia and dislocation so many miles away from home."
While nearing the end of a solitary three year job on the Moon an astronaut has an accident, and when he begins having hallucinations he tries to enlist the help of the station's computer to find the truth behind his visions.
