Investigator Jan and profiler Louise constantly move around in the thrilling periphery of a murderer's view as they link a series of killings.

Seven years ago, Zaid went to war against the Copenhagen underworld to avenge his dead brother. His identity as a respected doctor of cardiology and life as a family man is but a fading dream, and in prison Zaid suffers the loss of his son Noah, whom he barely knows. When a police agent approaches Zaid and offers him a deal to be released in exchange for infiltrating the Copenhagen underworld, he sees his chance to reclaim the remnants of the family life he left behind. But everything has a price, and Zaid realizes that he has now seriously endangered his son's life. After all, once you become part of the underworld, is there any way out?