Rolf Larsen, once a respected criminal investigator at the CPH Police, lost his daughter in a tragic accident. Rolf is devastated from grief, but five years later, it turns out that the Danish National DNA register has a system failure. New information brings him hope that his daughter might be alive, and an unauthorised investigation leads Rolf on the trail of a case of illegal child trafficking. He will team up with tough French investigator Claire as they will have to face a sprawling network.