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.

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.