A theme park employee is murdered, taking Marleau back to her childhood. Standing before her are the park owners, Lucie and Antoine, a radiant and mysterious couple. Marleau then learns of a recent series of bizarre sabotage and that another tragedy has already taken place.

A day of celebration becomes a day of tragedy: Frédéric is murdered during his daughter's wedding. An opportunity for Marleau to rub shoulders with her childhood idol, Daniel Rivière, friend of the victim. But very quickly she has the singer down as a suspect. Will she have to handcuff him?

In Corsica, the body of a former doctor lies next to his unconscious wife. Marleau suspects their daughter Lesia, who came from Paris to succeed her father, is hiding something. Her return had created a lot of hostility. Waking from her coma, the wife talks of suicide. Marleau isn't convinced...