A simple stolen car in Tornby introduces Rolf to the young police assistant Neel. He is reluctantly ordered by their joint boss to test the car thief's DNA with his old colleagues in Copenhagen.

Rolf and Neel have found serious errors in the Danish DNA register. The Minna case reopens, and Rolf and his former boss, Astrid Oxlev, are to assist French police with investigator Claire Bobain in the lead.