After the attack on Vernaillen, Marc is protected by his new superior, adjutant Goffinard. Franky defends his superior officer, adjutant Debels, who went way out of line in a racist incident. In return, Debels introduces Franky to Group G, a shadowy organization of far-right gendarmes. Madani Bouhouche seeks revenge after his dismissal from the Gendarmerie.

At a demonstration, Marc as a gendarme and Vicky as an activist face each other. When Marc is attacked by a group of students , Vicky saves him. It brings them closer together. As a reward for his discretion, Franky is allowed an internship with the Special Forces Brigade Diane. Marc and Goffinard discover that several of the recent murders can be linked. Vernaillen is secretly conducting a parallel investigation.