October 2015. French customs seize seven tonnes of cannabis in the heart of the capital. The same day, Hubert Antoine, a former mole with a shady past, contacts Stéphane Vilner, a journalist at Libération. He claims to be able to demonstrate the existence of State drug trafficking led by Jacques Billard, prominent media figure and high-ranking French police officer. Suspicious at first, the young journalist finally dives into an investigation that will lead him to the darkest corners of the Republic.

Undercover

Despite the life threat hanging over his head, Stéphane decides to go back to Corsica for the funeral of Christophe, a childhood friend and companion in arms, murdered the day before. On this occasion, the chain of events which made him, the learned petit-bourgeois from Bastia, shift from delinquency to political radicalization and then to clandestinity, comes back to his mind.