Since his brother was killed in La Courneuve and the police didn't even bother to intervene, Richard decides to take revenge and vent his hatred against society. He robs a gun shop and builds up an entire arsenal for himself. Salem, who happens to have seen him in action, gives the police a false description and begins his own investigation. Richard then steals a motorcycle and assaults a gas station attendant. As he is about to attack a tourist in the subway, he meets Marilyn, a post-adolescent girl who enjoys taking risqué photos of herself in a photo booth. Together, they escalate further into violence while Inspectors Casti and Galo are on their trail, harassing the only witness-a elderly North African man already known to their department.