In an undefined future, a dystopian underground society is oriented to production and consumption in the malls. The population is controlled by drugs and people do not feel affection or sympathy for others. Sexual intercourse is absolutely forbidden and roommates are chosen by a computer. Faceless androids are responsible for the surveillance of the behavior of the dwellers and people pray in Unichapels for their god OMM 0910 that responds through recorded electronic messages. The worker THX 1138 handles radioactive materials in a factory and lives with his roommate LUH 3417. When she decides to stop using drugs, she becomes lucid and replaces the drugs of her partner for harmless pills. THX becomes emotional again and falls in love with LUH. He plans to escape with LUH to the superstructure, where they expect to live in freedom. But when SEN 5241 manipulates the computer to live with THX, he reports a complaint to the authorities and SEN is arrested. When THX commits a mistake in his...