A posse of crooked cops, malevolent gangsters and a horde of walking dead are the centre point of this gruesome, tight, action packed, claustrophobic tale of retribution and escape. Penned like animals, on the top floor of a deserted high-rise block, these two opposing gangs find that they are not alone in the lair of bloodthirsty corridors of death. Joining forces to survive, they must reach ground level together or perish. Loaded with a bad ass attitude, guns, axes and extremely creative hand-to-hand combat sequences that project the fears and paranoia that are the fighting forces behind the need to survive, when caught up in the wrong place at the wrong time.

In the underbelly of the Parisian criminal world, the Police are frustrated by a gang committing a series of violent robberies. Leo Vrinks and Denis Klein are two cops seeking promotion, and the imminent departure of the Chief sets the scene for them to compete for the vacant throne. The competition between them becomes increasingly ruthless and blurs the usual lines of morality, until there seems no difference between the police and the criminals they chase. Vrinks, meeting with a source, becomes involved with a murder. Klein seizes the opportunity to up the ante and arranges for the arrest of Vrinks, but when he goes further and viciously involves Vrinks' wife, Camille, revenge is inevitable.

In the near future Paris, a cop is searching for his wife's killer. The trail leads him to a high tech medical clinic where everything is not what it seems.