A young gambler is found murdered in Maastricht's city park. The investigation leads Eva and Wolfs to a world where money is made in many ways. A woman reports to Romeo and Marion that she has been threatened by her ex-husband, who has just been released from prison.

At the request of the Criminal Intelligence Unit, Wolfs and Eva tap the phone of wealthy Pierre van Brunssum. What seems like a boring job in the context of a fraud investigation turns into something else entirely when it turns out that Van Brunssum's son has disappeared without a trace. Their colleague Romeo also has to deal with a disappearance.