Don Giovanni is a passionate lover of life and women. One night, the Commendatore of Calatrava catches him kissing his daughter, and challenges him to a duel. Don Giovanni wins the duel, which of course means that the Commendatore is slain and so begins the end for Don Giovanni.
Criminal investigating officer Hanne Wilhelmsen considers the possibility of a serial killer as she tracks down a series of numbers written in blood appearing on walls all over Oslo.