Leïto captures 20 kg of cocaine from Taha, worth over a million euro, which incites Taha to send his thugs to recover the merchandise, led by the towering K2 (Tony D'Amario).
Leïto hates drugs and injustice and wages a one-man war against a neighboring gang lord named Taha Bemamud (Bibi Naceri) to keep his own building and people safe and free of drugs. Certain blocks are ruled over by various individuals and one high rise apartment block is looked after by an athletic and street-wise man known as Leïto (David Belle). The area is now flooded with hard drugs such as heroin and completely controlled by gangsters. Three years later, an almost feudal system has developed amongst the street gangs of B13. Police checkpoints stop anybody from going in or out. Unable to control B13, the authorities construct a high wall topped by barbed wire around the entire area, forcing the inhabitants within to survive without education, proper utilities, or police protection behind the containment wall.
In 2010, social problems such as violence, drugs and organized crime have overrun the poorer suburbs of Paris, especially a Banlieue commonly referred to as B13 (Banlieue 13, or District 13 or Borough 13 in English), a ghetto with a population of some two million.
