A young woman wakes up in hospital after a car accident, with no memory of her identity. The police recognize her as Marina Masson, a girl kidnapped 11 years ago.

Marina plans to run away with Mael; Laurent finds Alexandra Martinez's identity card in a jacket Marina lost.

Marina discovers the joy of having a family and a loving mother, making her little sister Éléonore very jealous. She decides to become Marina for good and breaks off with Maël, the friend she'd been through so much with.

A mysterious correspondent contacts Alex/Marina and threatens her: he knows her identity and will report her to the police if she doesn't do everything he says. Laurent and Hélène grow closer and end up spending the night together again.

Hélène admits that eleven years earlier, Marina ran away after surprising her with her lover. Superintendent Victoire Eberhart discovers that the man who has been pulling the strings since the beginning is none other than Paul, her lieutenant.

A young woman wakes up in hospital with amnesia, and the police are convinced she is the girl who disappeared 11 years ago.