(French; English subtitles) Paris 2010. An isolation wall surrounds the ghetto cities. Without effective law reinforcement, within these walls, gang rule is absolute. Damien is a member of an elite police squadron, a special unit highly trained in martial arts and the precise physical skills necessary to navigate the treacherous urban landscape of Paris' future. He is now given the most vital and dangerous task of his career: to retrieve a loose nuke stolen by the most powerful gang of Barrio 13. Leïto, a vigilante criminal whose only goal is to save his sister from the clutches of the same gang, knows Barrio 13 like the back of his hand. Assigned to infiltrate the sector and defuse the bomb, Damien must convince Leïto to join his cause. Yet everything is not quite as it seems. Who exactly works for whom? Who is really pulling the strings? Above all, who profits from the use of this bomb?