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.

Transport Minister Bertrand Saint-Jean is awoken in the middle of the night by his head of staff. A bus has gone off the road into a gully. He has no choice but to go to the scene of the accident. Thus begins the odyssey of a politician in a world that is increasingly more complex and hostile.