The cruise ship "Edda," with a group of novice nuns on board, finds itself in distress when Captain Marten "Ahab" Drake falls overboard. Only a mysterious figure saves the ship at the last second from crashing into the quay wall. The nuns escape with nothing more than a scare, but Sister Renate is firmly convinced that the rescuer was sent in the form of Jesus Christ to save them. When Ahab is recovered from the water shortly afterward, however, it quickly becomes clear that purely earthly circumstances caused the captain's death. Detectives Nora and Jon investigate.

Jan Grunholt is shot and killed while taking a walk in the dunes. It soon comes to light that the young man was seeing two girlfriends at the same time. A minor rivalry flares up between Nora and Jon, as each suspects the other of being the deceased's girlfriend. However, both have alibis, leaving investigators with only one suspect: Henning Freese, wakeboarding world champion and Jan Grunholt's business partner, who had a heated argument with him shortly before his death.