Sentenced to six years in prison, Malik El Djebena is alone in the world and can neither read nor write. On his arrival at the prison, he seems younger and more brittle than the others detained there. At once he falls under the sway of a group of Corsicans who enforce their rule in the prison. As the 'missions' go by, he toughens himself and wins the confidence of the Corsican group.
Vigilante, a small armored truck company, is in full crisis mode. Victim of three violent hold-ups in a year, which left no survivors, the company is on the verge of bankruptcy and its employees are extremely worried. Some even suggest a complicity between the robbers and the firm. It is in this difficult context that a man, Alexandre Demarre, one morning presents himself to start his first day of work at Vigilante.
During a patrol, Julie and Simon, two police constables, injure a wealthy man who pointlessly killed their partner. This wealthy man in question turns out to be the son of a politician. This is why the two police constables are accused of brutality by the brass. Abandoned by their superiors, the two leading characters will lead an investigation on the drug that caused the politician's son to be out of his mind.
