East Frisian Coast: A ghost ship on the North Sea, a yacht with three dead and one survivor on board who does not speak a word. A mysterious case for the special unit of the LKA Lower Saxony, led by investigators Femke Folkmer and Chief Inspector Tjark Wolf. The deceased appear to belong to a company that operates offshore wind farms. Initially, the police believe the survivor is the perpetrator, as everything points to a jealousy drama. However, when an assassination attempt is made on the young woman, it becomes clear: this is about something completely different...