17-year-old Lucie (Pauline Étienne) lives with her father, Hugo (Olivier Rabourdin), on an isolated plant nursery in the south of France. A year earlier, her mother Sonia (Florence Thomassin) ran off with Hugo’s young farmhand, leaving father and daughter behind. In the wake of this abandonment, Hugo and Lucie have developed an suffocating, highly dependent bond. When Sonia suddenly reappears after being abandoned herself by her lover, Hugo's possessive nature takes over. Driven by jealousy and fear that Lucie will leave him to be with her mother, Hugo secretly locks Sonia away in an isolated shed on the property to keep her existence hidden from Lucie. The secret unravels when Akim (Ouassini Embarek), a newly hired farmhand who has caught Lucie’s eye, stumbles upon the captive mother.