Alexandre (Melvil Poupaud) and his wife Marie (Aurélia Petit) have been married for many years and settled in Lyon. The small family of four is full of happy laughter. However, Alexandre has a dark past. When he was a boy scout, he was molested by a priest he deeply trusted. This experience has brought a great blow to Alexandre's spirit, but he can only choose to seal this memory deeply in his heart. By chance, Alexandre was shocked to learn that the priest who molested him still has contact with children, which means that he may still threaten the personal safety of those children. So Alexandre and Francois (Denis Menochet) and Emmanuel (Swann Arlaud), who are also victims like him, decided to join forces to stand up and uncover the hypocritical mask of the priest.