Detective Chief Inspector Sörensen is anxious. More precisely, he suffers from a chronic anxiety disorder that makes life difficult for him. That is why he is moving from Hamburg to the Frisian village of Katenbüll, where he hopes for a more peaceful working life. But that is not how the cookie crumbles. The place is grey and bleak, it rains continuously, and the locals are not very enthusiastic in welcoming him. He also finds his new colleagues, Jenni Holstenbeck and Malte Schuster, somewhat suspect. And then things go from bad to worse. Mayor Hinrichs is found dead in his stables. Sörensen quickly realises that there is a lot of bad blood hidden behind the small town's tranquil facade and some well-founded reasons for anxiety...
The celebration of the 50th anniversary of “Capitol-Insurance” is due – that's what the bosses thought. All employees are invited to join the party in a hotel. However, rumors say the company's not doing very well. To avoid unemployment due to the possible shutdown of the smaller branch office the only option is to move to the headquarters. Now that's the ultimate challange for Stromberg, who is notoriously trying to be the example of a department manager, gathering all of his employees behind him.