Where on earth has Harald von Friedwitz gone? After a night of revelry, the next morning only his abandoned shoes remain on the beach of the North Sea island of Langeoog. An accident? Or could he have harmed himself? Perhaps the toxic pufferfish served to them for dinner by the Japanese chef didn't agree with him. For Chief Inspector Nina Moretti, who had been looking forward to her relaxing North Sea vacation, a race against time begins.