The head of the Danish migration agency is murdered brutally, and the murder is linked to a controversial expulsion case. Investigator Henrik Sabroe needs help from his colleague and friend Saga Norén, but she is in prison for the murder of her mother

Henrik's two main clues in the investigation are the left-wing radical group Red October and the refugee Taariq, who has gone underground. On a personal level he tries to realize that he will never figure out what happened to his missing daughters, but then someone begins to show interest in the mystery

Henrik and Saga suspect that Taariq and the missing expert on left-wing radicals are hiding something, and collaborate to reveal them. They disagree on how to handle the homeless girls who still refuse to give up their identity

Taariq recognizes a car related to the case. He wants to push the owner for money, but is himself accused of robbery. Saga fears that will be more murders and Henrik's efforts for the homeless girls end up in disappointment

Saga and Henrik keep searching for a link between the murder victims. Lillian is reprimanded by her superiors. Dan finds out where his ex-wife and son are and causes trouble

Henrik believes he found the connection between all victims and an unexpected finding ends up on the investigation board. At the same time, the crack between him and Saga is greater than ever

The inquiry into Tommy continues and Solveig still refuses to cooperate. She talks neither with Saga nor Jonas. The question is how long they can keep her in holding if they do not obtain any evidence

Henrik and Astrid are trying to get used to being father and daughter again. Meanwhile Saga gets a breakthrough and the murderer is revealed and arrested under dramatic circumstances. The murderer even confesses to the six killings/revenges