Welcome into the everyday life of the BAC (Anti-Crime Brigade) of the small town of Saint-Villiers, headed by Commissioner Campanella, an old veteran who rose through the police ranks the hard way and now has to maintain order in his city. For this, he will "have to do with" his team of cops with strong character: Bernard, Francky, Ines, Vince, Yohann, Audrey, whose enthusiasm does not compensate for errors in judgment, inexperience or existential problems.