The dad, Thierry, was born with an intellectual disability. With his daughter Luce, they form an indestructible block of love. They love each other as much as they protect themselves from the outside. But today, Luce is six years and has to go to school. Curious student and eager to learn, she progresses quickly, until she discovers that her father is different and that he can neither read nor write. Her giant, her god, has just fallen from his pedestal. Fearing that knowledge will separate them forever, Luce chooses not to learn anymore and to remain ignorant, like him. Her teacher Solange is worried to see her suddenly stop studying, accumulate absences. Believing to do well, she reports Luce's case to her superiors who alert the social services.

Le papa, c’est Thierry, il est né déficient intellectuel. La petite, c’est Luce, sa fille. À eux deux, ils forment un bloc d’amour indestructible. Ils s’aiment autant qu’ils se protègent de l’extérieur. Mais aujourd’hui, Luce a six ans et doit aller à l’école. Élève curieuse et avide de connaissances, elle progresse à grands pas quand elle découvre que son père est différent et qu’il ne sait ni lire ni écrire. Son géant, son dieu, vient de tomber de son piédestal. Craignant que le savoir ne les sépare à jamais, Luce choisit de ne plus apprendre et de rester ignorante, comme lui. Son institutrice Solange s’inquiète de la voir subitement cesser d’étudier, cumuler les absences. Croyant bien faire, elle signale le cas de Luce auprès de sa hiérarchie qui alerte les services sociaux.