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.

Marc and Vicky try to keep their relationship a secret from the outside world, but discussions about drugs and their opposing political views create tension. Franky gets to work as a security guard at a minister's private party. During a break-in at a supermarket in Nivelles, three people are cold-bloodedly executed, including a gendarme. The robbers lure a gendarme patrol and a police car into a deadly ambush; the Brabant Killers are born.

Vicky graduated as a lawyer and now lives with Marc. The latter conducts a secret investigation into the Gang together with Goffinard. Vernailing is promoted away. The Group G thinks that Marc is getting too curious about their activities. They send Franky after him. It becomes a painful confrontation between the two friends.