Eva and Wolfs try to make the best of it as ‘ordinary' police officers on the street. When they are confronted with the murder of a young hairdresser and her father threatens to take revenge on the perpetrators, Mechels and her team have to pull out all the stops to prevent that from happening. However, the threat comes from a completely different angle. Risking their own lives, Wolfs and Eva end up at a school, and the big question is whether disaster can still be averted. And then there is Daan de Vos, who has turned harassing Eva and Wolfs into an art form. Romeo has decided to get to know the COSA circle, a group of volunteers who assist sex offenders in their return to society.