Juliette (Judith Godrèche), a 15-year-old girl, is in an intense adolescent relationship with her 14-year-old boyfriend, Thomas (Melvil Poupaud). When Thomas's father, Willy (Jacques Doillon), plans a vacation to Ibiza to reconnect with his son after a long absence, Thomas insists that Juliette come along. Staying together in a villa in the Balearic Islands, the dynamics between the trio gradually shift. As Willy spends time with Juliette, he grows infatuated with her, while Juliette's perception of Willy turns from seeing him as a father figure to viewing him as a romantic prospect, triggering emotional tension and jealousy between Thomas and his father.