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.

When a young boy goes missing during a holiday camp, everyone immediately fears the worst. Wolfs and Eva spring into action. Romeo and Marion are confronted with an old disappearance. The person who failed to solve the case back then is now getting in their way. Frank runs into problems with investors.