Wolfs reported his kidnapping to the police. It turns out that the Italian accomplice was a well-known mafia hitman. It seems that the mafia, in collaboration with Dutch ex-commandos, pushed the Hamzas out of the market and have a leak in the police force. When Wolfs realizes that prosecutor Bols has not passed on certain information to Eva, he wonders whether the leak is really at the police station. Maybe Bols is the one who is at fault. When they keep an eye on him, it soon becomes clear that Bols is indeed involved in a mysterious operation. But who will believe Wolfs and Eva?

Wolfs chases after ex-commando Gabriel. After a wild chase through houses and across rooftops, things ultimately go wrong for him. The next moment, Wolfs regains consciousness and slowly realizes what exactly is going on. The accomplice is an Italian who knows a lot about the investigation. The question now is whether the commandos have a mole in the department. An additional problem is that Eva and Mechels are in no hurry to investigate Wolfs' disappearance. They think Wolfs can't handle his disappointment about Fleur's conviction and needs time to himself. However, when it takes too long, Eva decides to investigate. But is she still in time to save Wolfs? Esmee and Romeo investigate a report of domestic violence; a son accuses his father of beating him up. And Romeo confronts Tony, Esmee's boyfriend, with the assault charges. Tony is unimpressed and tells Esmee. She is furious that Romeo is investigating her boyfriend behind her back.

At the entrance to the former NATO center in a cave system, the body of an old man is found. It appears to be a simple robbery and murder, but the case takes a turn when it emerges that the man was convicted of a diamond robbery in Belgium in the 1970s. It turns out that just before his death, the man had contacted his former co-defendants. When the son of an American who served in the NATO cave in Maastricht during those years shows up, it seems that there is more to the story. Especially when it turns out that the loot from the robbery has never been found. While awaiting the verdict against Fleur, Wolf investigates previous cases involving the Hamza family. He speaks to the ex-commando who murdered Coscun's father, but this only sows more doubt in Wolf's mind. When he tries to speak to Gabriel, the ex-commando's friend, Gabriel suddenly seems to have disappeared off the face of the earth. Romeo and Marion help a girl who is being harassed by a homeless man. He stalks her, and Romeo and Marion find it difficult to do anything for her. Fortunately, she has a neighbor who helps her.

A young boy disappears on his way to school. When it turns out that a notorious Belgian pedophile has escaped from custody, alarm bells start ringing. But Wolfs is suspicious when he finds out that the mother is the daughter of Coscun Hamza, the clan leader of the Hamzas. Eva warns against tunnel vision, but Wolfs and public prosecutor Jens Bols believe the kidnapping is related to the clan's drug business. They seem to be proven right when they eavesdrop on Coscun and hear him arranging for a truckload of heroin as ransom to free his grandson. Romeo and Esmee investigate a series of thefts and barn fires in a neighborhood where people are not exactly eager to cooperate with the police. At Esmee's invitation, Romeo goes to a concert with her. What he didn't take into account is Esmee's new boyfriend. Wolfs and Eva argue about the strategy for Fleur's defense. Wolfs wants Eva to testify on Fleur's behalf that she was in great psychological distress. But Eva refuses to lie.

A man visits a sex club and then reports it to Wolfs and Eva because he believes girls are working there against their will. The duo goes to investigate and finds the man waiting outside the door again. He turns out to be a private detective, but refuses to say what he is doing there. When Wolfs and Eva do indeed find victims of human trafficking in the club, the private detective's role becomes increasingly unclear. The question is what he wants from the girls, and it is also unclear who is the victim and who is the perpetrator. Romeo and Esmee are chasing a scooter thief. Every time they get him in their sights, he escapes. Then they end up in a chase in which the young scooter thief crashes hard. The case seems to be solved, but it turns out not to be that simple. The boy sues Esmee and Romeo. Wolf clashes with Fleur's lawyer, who is preparing for the hearing and does not agree with his ideas for the defense strategy.

After visiting a mosque, an elderly man dressed in a djellaba is shot dead in the street. A few indistinct numbers are found next to his body. This is not the first time that a Muslim has been shot, seemingly at random. It has also happened in a neighboring town. When Wolfs and Eva investigate the crime scene, they realize they have another problem: the victim is the father of Coscun Hamza. He is the head of the Hamza clan, a family that trades and supplies drugs. Of course, Coscun also wants to know who killed his father, and Wolfs and Eva do everything they can to find the perpetrator first. The trail leads them to Gabriel, a former commando who served in Afghanistan. Marion and Romeo are confronted with a daughter who calls on their help. She suspects that her father's caregiver is taking advantage of his dementia to embezzle his money.

The bass player of a famous singer's backing band dies of an overdose. Wolfs and Eva enter the world of music, where sex, drugs, and money are the order of the day. It's not exactly Eva's world, and she would prefer to dismiss the case as an accident. Wolfs, however, believes that too many people could benefit from the musician's death. The big question is whether it was an overdose or a disguised murder. And was the bass player the intended victim? Romeo and Marion are called to a boat in the harbor after a break-in. The perpetrator is a severely autistic man who cannot tell them anything about who he is or where he lives. The only thing he has with him is a violin.

Wolfs and Eva are confronted with a drug deal involving the Hamza family, heroin dealers from Maastricht. It appears that they have been ripped off by their customers, and the Hamza family's security guard has been murdered. Wolfs and Eva investigate what happened, but are significantly hindered by the Hamzas, who are pursuing the perpetrators themselves. The question is whether they were actually robbed or whether the motive lies elsewhere. Romeo and Marion are called in to help a father whose daughter is afraid to go to school because fake nude photos of her have been posted on popular websites. The perpetrator appears to be a schoolmate who has problems of his own. Eva meets David Boesmeer, a trauma psychiatrist who is treating her. They don't hit it off right away, because she has no desire to open up.

After Eva helped and betrayed Public Prosecutor Jens Bols, she has to return to prison. There, she faces the danger of being attacked again, which puts her under enormous pressure. Meanwhile, the hunted Wolfs is still determined to get Fleur to safety. He even goes so far as to ask his ex, Fleur's mother, for help. His plan seems to be working, but Bols is doing everything he can to find him before that happens. It leads to a cat-and-mouse game at Brussels airport. Romeo and Marion's lives are also in danger. They are taken hostage by the father of the beaten girl. He corners Mechels; he wants her to hand over the perpetrator who is in prison in exchange for the lives of her agents.

Wolfs faces a dilemma: he must choose between saving Eva or his daughter Fleur. An impossible choice that becomes even more difficult when Public Prosecutor Jens Bols shows up. He is convinced that it is not Eva but Wolfs who is responsible for De Vos' murder. Bols leaves no stone unturned in his quest to catch him. As a policewoman, Eva's life in prison is not safe. Then Bols suddenly appears before her and proposes a deal. Romeo and Marion are called to the scene of an assault on a young woman. They catch one of the perpetrators, but he refuses to talk. This ultimately has major consequences for the team.