To avenge the insult done to their leader, buried without honors, Eddy, Theo, Walter and Roxane cross the yellow line. They remove Benaissa for questioning, very muscular, and manage to snatch the name of his accomplice, but accidentally kills Theo. Despite the release of their alibis, the four colleagues find themselves in the crosshairs of the IGS and the prosecutor. They are constantly questioned by Vogel and his men.