Aurore Garnier, a police officer obsessed with the abduction of her sister Clara 25 years earlier, traces a woman she believes to be her.
Clara decides to meet the Garnier family, but not all of them believe it is her; Gabriel blames a drug dealer when his night club is set on fire.
Clara gets into a violent argument with her lover; Frederic learns that Clara opposes the sale of the estate and decides to intervene.
Clara learns the secrets of her abduction, including the name of one of her captors; Aurore believes there may be a mole among the police.
Clara rushes to look for clues that link Baptisti to her abduction; Aurore's husband discovers the mole's identity.