Zef, twenty years old, is a simple-minded man who can only say one word: "love you". Always happy, loving everyone, he lives with his sister Sophie on a farm in the Lot. Attracted by the sad smile of Marie, he rapes her one evening without realizing the gravity of his act. Commited in a psychiatric asylum, Zef falls into a deep silence. Hugues, a doctor with avant-garde methods, is in charge of caring for Marie. He decides to confront her with Zef, convinced that her healing goes through a long reappropriation of life and love.

Zef, vingt ans, aux capacités d'esprit limitées, est toujours heureux, aimant tout le monde. Il vit dans son monde, avec sa soeur Sophie dans une ferme isolée d'une région française. Mais un soir, il commet l'irréparable et viole la jeune Marie sans le vouloir...