Fantastic movie about a young arab man (Tahar Rahim) who is sent to a french prison, where he befriends a mafia kingpin called Cesare Luciani. Luciani forces him to commit a terrible crime (which haunts him through the whole film), and then gives him support and protection in his gang. The young man also learns how to deal drugs and even tries to mastermind some business of his own. Powerful and violent, this amazing movie will definitely blow you away; the acting is first rate (especially Niels Arestrup in the role of the mafia lord), and it keeps coming up with twists and turns right through the closing credits. One of the best movies of its genre; a must see.