En un règim totalitari d'una societat futura, s'ha aconseguit eliminar la guerra a base de suprimir totes les emocions i qualsevol cosa que les provoquin. Llibres, art i música estan estrictament prohibits, i els sentiments es consideren crims que comporten la pena de mort. Clerick John Preston és un agent del govern la missió del qual consisteix a executar als que desobeeixin aquestes regles. Tanmateix, en un moment determinat, comença a preguntar-se si té emocions i sentiments i si val la pena viure reprimint-los.

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.

Nick and Janine live in bliss until her ex warps time to try to tear them apart by using Nick's old girlfriend. As Nick's memories and reality disappear, he must decide what he's willing to sacrifice to save -- or let go of -- everything he loves.