Eighteen-year-old Laetitia has disappeared. Police quickly arrest Tony Meilhon but investigators still can’t find the body. This story follows the repercussions for Laetitia’s family and twin sister Jessica; the police force inner workings and social services; the judicial system and government itself.

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.