Four prisoners discover a handwritten book of black magic in their cell, and decide to use it to escape.

A simple and quiet young man, Ruben faces the ups and downs of his life. But now, in the family, the “lame duck” is his brother. He allowed himself to be drawn by a gang of thugs into a high-risk enterprise. After being badly beaten in a beating, he finds himself between life and death. Fatally invested with a brotherly duty, Ruben goes to find the thugs to try to remove them from his "brother" and put an end to this story. But what was supposed to be an end turns out to be a nightmarish departure.

An anonymous hacker has hacked all of Paris' cameras and observes the city unbeknownst to its inhabitants. Petty crimes and moments of stolen intimacy, he sees everything. Until the day that an explosion lays waste to the Gare d'Austerlitz. The police starts tracking down an Al Queda satellite group. The hacker succeeds in finding images of the explosion and discovers that it was a young couple who planted the bomb. Using the city's cameras, he decides to hunt down the criminals.

By hacking the rich youth, Manon and Léo accidentally find an email they shouldn't have seen...