Pierre Mertens is the head of the Antwerp State Security cell, the Belgian secret service. Together with his team he goes looking for a few kilos of missing Semtex.

Algerian Defense Minister Mourad Djebar has arrived in Brussels for the NATO summit. At the end of last year, Djebar escaped an attack claimed by the rebel group MLA

The team is unable to get a grip on a Jewish criminal gang, despite the good contacts between Farah and her informant Samuel Bloch. Can they trust Bloch any longer?

When the young Syria fighter Ruben De Bruyne returns home, he is embraced by his family. However, the team decides to observe the boy.

The team investigates Peaceful Minds, a mindfulness organization, which Rob believes is a front for Milner's cult. Yet Rob also finds no concrete evidence.

A hacker from Anonymous leaves a message on the computer of the Minister of Justice: Chris Rogiers, who is in pre-trial detention for cyber attacks, must be released.

Iwein Van Werde, a former key figure of the far-right Blood & Honour, resurfaces after years when he rents a room for a stylish private party. The team does not trust the matter.

When the team is put on the trail of Professor Felix Tambuyser and his bizarre behavior, there are immediate fears of scientific espionage.

An innocent fight between two boys is used by extremists to pit Jews and Muslims against each other. The team is doing everything they can to defuse the situation.

During a raid on one of Chaim Rosenthal's hiding places, Alexander never loses sight of Rob. Yet Rob manages to completely botch the action.

A suspicious exchange brings the Antwerp State Security team on the trail of Bruno Lanssens. To whom does the ambitious man sell sensitive information? To find out more, Alexander makes a bold decision.

While Alexander is held hostage, the team discovers that nothing is as it seems. They decide to set up a trap to get in touch with the Russian spy. Young Vinnie now also discovers the truth behind his recruitment.

The team is convinced that it is only a matter of time before Gert Borlée takes action. The only question is who or what will be the target of this lone wolf? When his guns end up in a high school, every second suddenly counts.

A social networking site was hacked, personal data was stolen en masse. It soon turns out that one 'Big John' knows more, but who is behind this internet nickname? New team member Nina Van Hoof makes her debut.

When the team finds incriminating information about Feldmann's husband, their big boss himself finds himself in the middle of a media storm. Who targeted Rosa Feldmann and why?

A threatening letter from IS puts the team on edge: there are fears of an attack. Nina consults her informant, but then Alexander discovers that the two have a sexual relationship. Meanwhile, young Hailey suddenly appears at Rob's door.

An investigation gets stuck, and Alexander sees no choice but to put pressure on Farah: she has to pose as an interpreter for an Iranian businessman. But then Farah turns out not to be completely insensitive to the man's charms.

After shooting a young student, Farah has problems of conscience. In the meantime, the team is mapping a Muslim extremist group: something seems to be brewing there, but what?

Alexander feels guilty for what happened to Farah, but there is no time to think because a State Security van with documents disappears without a trace. The investigation leads the team to an animal rights organization.

While the team continues to search for Martine Vanhee's murderer, Rob secretly starts working on Inès' file on the murder of their daughter. He finds a trail that leads to Vic.