Sebastien (George Babluani), a clean-faced 20-year-old who lives in dire straits with his immigrant family family, is, hired to repair the roof of the morphine-addicted Godon (Philippe Passon). The old man dies before Sebastien can be paid, but not before the boy overhears a conversation that seems to promise easy money money. He impulsively decides to follow the instructions meant for Godon and see where they lead him. Once Sebastien steps on a train with his filched first-class ticket, events start moving quickly quickly. Unbeknown to him, the police are following his every move — but why?
From this point onwards there is no turn back for Sebastien… just when it seems the story is dissolving in a wild goose chase, Sebastien comes face to face with a ring of clandestine gamblers who bet on human lives. Arriving at a secluded house in the woods, Sebastien suddenly finds himself Player No. 13 in a terrible game. Trapped in a situation he can do nothing about, Sebastien loses his innocence before the first round rapped is over over.