An undercover agent at Serkan Bulut's Dutch-Turkish ecstasy gang is murdered. Police suspect they have a mole in their ranks. Former agent Bob Lemmens is approached by Patrick Diericks to infiltrate as a civilian infiltrator.

Contact with Leyla is difficult. To see if she can trust her new partners, Bob and Ferry will have to endure a severe test. Emotions run high and Timur struggles to come to terms with the loss of his cousin.