A body is found on the bridge from Malmö to Copenhagen causing a jurisdiction issue. Forced to work together, a Swedish and a Danish police detective are on the hunt for a killer.
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, which 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 Sara suspect that Taariq and the missing expert on left-wing radicals is 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.