The unit is created by chief public prosecutor Bilderdijk, when a case of child smuggling seems to be only the small piece of an organization. As one of the members of the team, public prosecutor Adrienne Rieding, is being threatened anonymously, she is reconsidering joining the unit.

Ben Govers and Harry Bresler are researching the kidnapping of an illegally adopted baby. District attorney Adrienne Rieding decides, even though the threats, stay with the unit and has a meeting with an informant called Anna. Ruard Talsma investigates who's behind the threats to the address of Rieding.

Ben Govers meets Katja van Dijk with whom he starts a relationship. The unit tries to seek a connection between a case of women trading and Scylla. Adrienne Rieding's husband, Paul, becomes deadly injured when his wifes car is being shot at.

The central part of employment agency Hermes is getting clearer. Rebecca de Leeuw goes undercover at Hermes and gets the interest of director Veenstra. She break in to the office, but can't extract the crucial details. When police men enter the scene and arrest Veenstra, all the employees and take possession of the office material, the computer with the important information explodes.

Ruard Talsma is investigating who could have used the name "Chiffon" and who's the leak within unit 13, who leaks the information straight to the department of justice. He suspects Rebecca is the leak. The unit does a search on a vacation resort, where they find heroine and a bazooka. An employee of Scylla offers Adrienne's daughter Josien hard-drugs.

Scylla-employee Stef Suurbier is being interrogated, but says nothing, because he is being blackmailed. Rebecca seems to have leaked information to Bilderdijk, but doesn't get fired. Under hypnoses she remembers the names on the secret list of employment agency Hermes, with which the unit tracks down the name of Scylla headman Louis Gerlach. A dealer is ordered to give Josien Rieding some special pills.

It's discovered Bilderdijk has a connection with Ruysdaal, one of the leaders of Scylla. Arthur discovers the information of Ben's computer is being monitored by Scylla and he finds monitoring equipment in his home.

Adrienne shows Bilderdijk a picture on which he and Ruysdaal, one of the two leaders of Scylla are shown together. He assures her he is not the leak to Scylla en he suspects it is Swager, a liaison between the minister and himself. He promises he will keep an eye on him. The Scylla network is rolled up in a bloody confrontation.