People in the future live in a totalitarian society. A technician named THX 1138 lives a mundane life between work and taking a controlled consumption of drugs that the government uses to make puppets out of people. As THX is without drugs for the first time he has feelings for a woman and they start a secret relationship.
THX 1138 (1971) Official Trailer - George Lucas, Robert Duvall Movie
THX1138 Theatrical Trailer
THX1138 Director's cut: The Future Trailer