Wolfs is dealing with the murder of a homeless man. But he is more concerned with Eva, who is investigating Frank's involvement with criminal money launderers. Then Wolfs receives a phone call informing him that Eva has been kidnapped. If he wants to see her alive again, he will have to cooperate with the gang. Romeo has to remove a dirty homeless man from the library. It seems like a routine job, but then the man finally loses it.

During a reenactment of the storming of Maastricht by French troops, someone is killed. It appears that live ammunition was used. The victim is the patron of the militia. A wealthy man, but during the investigation into the murder, it emerges that he did not always acquire his money honestly. This earned him many enemies. Marion also makes no friends when she finally breaks up with her lover.

A shootout between drug runners on the highway near Maastricht has fatal consequences. A Belgian businessman is shot and dies on the spot. A witness who was sitting next to the man has disappeared without a trace. Eva and Wolfs quickly arrest a suspect. When they finally find the witness, they think they have solved the case. But that turns out to be too easy.

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.

Eva and Wolfs must rescue an unwilling girl from the clutches of a dangerous pimp. Romeo and Marion are surprised by a hit-and-run driver during a traffic stop. But he's not off the hook yet; they're going after him!

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.

Despite security measures in place, a business executive is murdered during a party at a music center in Maastricht. When Eva and Wolfs discover drugs during their investigation, the atmosphere becomes explosive. Meanwhile, Romeo and Marion try to catch a burglar in a residential neighborhood.

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.

Wolfs is recovering, has been discharged from the hospital, and still needs to take it easy for a while. However, he can't stay away from work and, still somewhat weakened but in good spirits, he walks into the police station. Before he has even had a chance to say hello to his colleagues, a phone call comes in. The picturesque village of Sweikhuizen in South Limburg is shaken by a chase, and two boys who are being pursued panic and call for help. Before Wolfs and Eva can respond, the line goes dead. Marion and Romeo are in the middle of the lives of a couple of teenagers. Drugs, rape, and social media make it difficult to figure out who is lying and who is not. And Marion actually has something else on her mind, but it has nothing to do with work.

Wolfs ended up in the hospital after being shot while chasing the criminal Danneels in the caves of Zonneberg. Eva is worried; only when Wolfs wakes up will it become clear whether he has suffered permanent brain damage. She is also concerned about Maurice, who has been arrested by the federal police investigating the shooting in the caves. To make matters worse, she is also disciplined for ignoring the order not to enter the caves. And then Danneels is still on the run. When Wolfs finally wakes up, everything seems to be returning to normal. But then a dehydrated, unconscious German man is placed in the room next to Wolfs. When Wolfs finds out who the man is, he can't resist doing police work and, in his pajamas, sets off in pursuit.