Four friends go to a party before the Christmas holidays. But Vinca cancels and later, in distress, calls Thomas. He rushes to school but she is gone, for good. 25 years later, Thomas receives a threatening invitation to a school reunion.
Thomas and Max visit Francis to tell him the police have found Clement's body. Francis says he has engaged a Russian gang to recover the evidence. Meanwhile, Manon finds 100,000 francs in an old gym locker. Thomas pretends incredulity.
