In a not-so-distant future, an engineer named Sam Bell finds himself alone in a lunar station, dedicated to extracting helium-3, a vital energy resource for Earth. After three years of working in this desolate environment, Sam faces physical and emotional exhaustion, accompanied only by a robot named GERTY, who, although somewhat cold in personality, becomes his only companion.
As the end of his mission approaches, loneliness begins to take a heavy toll. Sam starts to experience strange hallucinations and health problems that lead him to question his reality. One day, after an accident on the lunar surface, he uncovers a secret that will change his life forever. Upon investigating, he discovers that his existence is not as he had been told; he is merely part of a much larger and darker experiment.
As he struggles for the truth and his identity, Sam must decide whether the sacrifice is worth it and how to confront the consequences of his discoveries. Loneliness and moral dilemmas emerge as central themes in this intimate narrative, prompting us to question the nature of humanity and the limits of ethics in the age of technology. With a brilliant performance by Sam Rockwell and a powerful visual style, this captivating story invites reflection on what it means to be human in a world of cold isolation.