Luisa lives with Mathieu, the man she loves, and Arthur, Mathieu's son by his first wife, who died in an accident. But Arthur, whom Luisa has been raising like her own, suddenly disappears from school and no one claims a kidnapping.
Marion does not love her husband anymore. She decides to leave him to live fully, not to be locked in the reassuring comfort of a family life. Dominique lives with his wife an identical situation but he can not take the plunge.
