Marceau visits Caplan in prison to offer him a way of escape and amnesty for himself, Roxanne and Morlighem. But what does he expect in return?

After helping Caplan escape from prison, Marceau asks him to help infiltrate a gang of robbers known as the Invisibles.

Caplan's hunt for the Invisibles continues. His only lead is Myriam Elmidoro, Merks' sister, who runs a gambling circle in Paris.

Caplan finally makes contact with the Invisibles. Meanwhile, Roxanne and Morlighem plan to kidnap Myriam.

Caplan must carry out the dangerous mission of negotiating with Madame Arifa in order to earn Dantin's trust.

After successfully selling the gold to the Arifas, Caplin is offered another mission by Dantin. This one is much more dangerous.

Caplan must execute his plan to capture the Invisibles and hand them over to Fèvre. Meanwhile, Madame Arifa and her sons kidnap Myriam.

Fèvre confesses all to Caplan. He tells him about a safety deposit box in a bank which contains a record of France's role in corrupt missions on the continent.