Julien is searching for missing sex worker Natalie Rose. He meets Edward, Natalie's uncle, and the two men delve into the criminal underworld of Amsterdam's red light district.

Natalie reveals the full shocking truth about Edward and Julien has to tread carefully. When tragedy strikes, Julien becomes determined to uncover Edward’s true motives.

Julien confronts Edward and has to take drastic action to protect his family. But a personal bombshell forces Julien to face some secrets from his own past.

The hunt is on for Edward, who has fled to England. Meanwhile, Julien and Genevieve plot an audacious move to try to turn Constantin and take down the Brigada.

As Julien and Genevieve outmanoeuvre Constantin, the Brigada make their own move and as Julien uncovers their inside source things lead to a dramatic conclusion.