Jean Dujardin stars as a crafty magistrate named Pierre Michel, whose tenacity at stopping the French Connection of smack that has been ruining his country, coming through via suppliers in Turkey, has him trying to take down the nearly untouchable drug lord, Gaetan 'Tany' Zampa. But with corruption of law enforcement going all the way up to the top of the city's politicians, and rival gangsters more than willing to become the next kingpin should Zampa stumble, Michel's going to have his hands full trying to chop off the heads of the Hydra when they rear themselves in unexpected places, and increasingly unexpected ways.