Caplan and his men find themselves alone, facing the IGS on one side and thugs on the other. Fortunately, Bordier, the Divisional Commissioner, heading for early retirement, is still there for a few days.
Unable to pay his gambling debts, Morlighem is kidnapped by gypsies. The kidnappers sent pictures of his torture to Caplan and demand a ransom. Running out of time, he has no choice but to call Lemoine.
For Caplan, Morlighem, Roxanne and Wachewski... it's over! Their way stops in a clearing surrounded by special forces of the police. The disciplinary council, convened in emergency room Caplan in custody awaiting trial.
Merks is incarcerated in the prison where his inmate Eddy Caplan. Marceau visits Caplan and offers him a deal: escape with Merks to infiltrate his team, called the "Invisible", and in exchange, receive an amnesty for him and Roxanne Morlighem.
Mercks died. Caplan finds himself alone, and must at all costs find a way to get in touch with the Unseen. One track: Myram Elmidoro, the sister of Mercks, who runs a circle game in Paris.
Caplan, eventually comes into contact with the Unseen. He was immediately taken away to be tortured is trying to make him confess his responsibility in the death of Mercks. For their part, Roxanne and Morlighem decide to remove Myriam as currency.
Caplan must carry through the dangerous mission of negotiating with Mrs.Arifa. Confidence Dantin is the price. Moving forward, Caplan has little choice. Marceau was removed from the management operations infiltration in favor of General Smith
Caplan performs efficiently resale of gold Arifa, and as he foresaw Dantin going to talk about another mission. Important, but much more dangerous shine in their local Bleuvenne Industries latest prototype: a revolutionary named inessive gun.
Turning the inessive. Invisible arrest ... but at the other end of the wire. More news from General Smith, nor Marceau or Roxanne. Caplan brings the invisible to the case of self Rocky pending.
Roxanne can finally reconnect with Caplan. Before disappearing Fèvre opened. He told her the secrets of Africa and the Françafrique, the links between all these characters ... He spoke of a bank vault in which was deposited an explosive issue on the role.
After his car blew up, Theo was taken to hospital in a critical state. Caplan and Morlighem go to Vogel's place, determined to avenge their companion. Vogel finds an ally in the shape of Oriane Béridzé, who also wants to eliminate Caplan.
With the death of Vissarionovitch – who ruled as "boss of bosses" over several Russian-speaking mafia clans – a bloody war of succession is shaping up between the two pretenders: Jordania and Pavlovitch.
The Pavlovitch clan organizes the kidnapping of Salomé and her son to force Jordania into the open. Jordania has no option but to accept Caplan's deal and turn traitor to protect his family.
Oriane has managed to work her way into Caplan's group as an interpreter. She is bent on vengeance. Caplan has his gun in his hand when the Russians launch an assault on their stakeout.
The Russians got the better of Jordania, who was killed in the course of the attack. But how did the maximum security safe house get located so quickly? Caplan's suspicions fall on Andréas.
A change of allegiance leads to the arrest of Andréas. Despite their orders, Caplan and Morlighem continue to investigate. They manage to dismantle a drug ring involving Russians and Turks.
Caplan wants to rid himself of Vogel, but has to face a ghost from his past to do it. The detectives find themselves in conflict with the Turkish Mafia.
Walter remains enraged about the violence his children endured, and enlists Wassim Alcala, an old friend from the army, to help him take down the Turks.
Caplan and his allies launch an operation against the Turks, and as a result, `Baba' Aroudj is ordered negotiate with Joseph Marie Pietri, the Godfather of Marseilles.
The Great Manitou of the Turkish Mafia lets Baba Aroudj go free, but when Caplan and Walter arrive in Marseilles to recover him, they discover their trip has been wasted.
Caplan and Walter's efforts to capture Baba Aroudj interfere with the work of local police commander Guido Frankeur, who presses them into joining his war against the Turkish Mafia
While Caplan and Walter are stuck in Marseilles, back in Paris, Roxane and Bernardi are caught up in a drug deal with mobsters their boss knows very well.
