A dead student is found in the Weser. Chief inspector Inga Lürsen (Sabine Postel) and her colleague Stedefreund (Oliver Mommsen) learn that he met men for money. During their investigations, the name Leon Hartwig (Felix Eitner) keeps popping up. The electrician has always been right where the victim was. An accident? Leon defends himself against the allegations, but cannot prevent his pregnant wife from becoming increasingly suspicious. Inga also has to ask herself who she can still trust. Because Stedefreund seems to be hiding something important from her...