Ali has just been dumped. As a gesture of compassion, his ex-partner Léo gives him the orange sweater he loved so much. This one quickly becomes a daily reference point and an outlet for the pain of love. Gradually, the much cherished garment becomes the object of all the attention. The nerve center of his memories, Ali then moves in an obsessive relationship with the garment so much so that his reality will collapse in favor of a new one, beyond his expectations and reason.