Set against the backdrop of a summer on the French riviera, the Roussier family and its fragile equilibrium is shaped by the uncertain diagnosis of 13-year-old Bertille, who suffers from a severe disability. Her parents and older sister Marion live in constant fear of losing her. Disconnected from typical teenage dreams, Marion seeks escape in a relationship with an older boy. When a new diagnosis emerges, the family’s future is redefined, opening up unexpected possibilities. Bertille will live, and so will her family.

Followed by his imaginary friends, Octave's car breaks down and he goes to a hotel. There he meets Anna, who has just left her job to devote herself to photography.