A police brigade working in the dangerous northern neighborhoods of Marseille, where the level of crime is higher than anywhere else in France.

Newly transferred to the bustling port city of Marseille to assist with a crackdown on organized crime, energetic young magistrate Pierre Michel is given a rapid-fire tutorial on the ins and outs of an out-of-control drug trade. Pierre’s wildly ambitious mission is to take on the French Connection, a highly organized operation that controls the city’s underground heroin economy and is overseen by the notorious —and reputedly untouchable— Gaetan Zampa. Fearless, determined and willing to go the distance, Pierre plunges into an underworld world of insane danger and ruthless criminals.

Franck and Simon are both good cops. They work as partners. But their lives take a tailspin when Simon, driving drunk, causes a tragic car wreck. A few years later, out of the police, he is forced to take matters into his own hands when his family is in danger.