Cordon

Lex works his way into the cordon trying to find his friend Jokke, who is offered an experimental drug by professor Cannaerts who seems to have a plan of his own. While Nald is still alive and gets rescued from the sewer canal and tries to get rid of his evidence, director Lommers questions his motives and starts to see her authority fail when national security orders a new executive above her position. Tensions and emotions inside the cordon rise even further when a gang tries to escape with explosives...

Jokke is starting to improve. Toon finds new friends. The explosion has made a victim. Nald is under fire by Lommers

Idriss is badly beaten, but this only strengthens his resolve to clean up the quarantine zone with Jokke. Suffering from brain damage, Ineke wants to take her baby to Micheline. Cannaerts develops a test that can identify those who are not infected.

Those who test negative twice can go to the transit zone. Prisoners abuse the tests in order to escape. Suzy is very disappointed in her love for Dennis. Nald bypasses Lommers to become chief of security.

Nurse Cynthia gradually realizes what the plans are for Tyl. The first group of people will soon be released from the cordon while the outside world protests. Too late, Nald notices that Jana is also getting out.

The whole transit, including testing, has to be started over. Jana realizes that Nald wants to eliminate her, but she's desperate to get out and clear Lex's name. Denise wants to take baby Ellie away from Micheline.

Cynthia discovers that Tyl is being drained of his blood to make a priceless vaccine. She puts her career on the line to make this information public. Meanwhile, the new transit period comes to an end.

Cannaerts has managed to procure himself a vaccine but a theft in the National Institute for Infectious Diseases disrupts the process. Meanwhile, Jana pulls out all the stops to clear Lex's name and get Nald detained.

Nald's threats to Jana don't have the desired effect. Lommers senses that Duchamp and Tradipharma are hiding things from her. Suzy gets suspicious of Dennis. Tyl realizes that he is not the only patient in the secure medical facility.

Nald and Jana are on a collision course for a final showdown. The virus itself brings about an unexpected turn of events. Nald and Lommers panic over the prospect of Cannaerts and Jokke getting outside with the truth.