Commissioner Angermüller treats himself to a break from duty. However, after a few weeks of idleness filled with traveling, cooking, and sitting in cafés, he feels a certain emptiness. That's when Derya's idea comes at just the right time to help their school friend Wiebke, whose successful restaurant is being sabotaged by an unknown person. Officially a waiter at the Old Beach Hut, Angermüller begins to investigate and has some initial successes—until there’s a dead body, and he finds himself in a difficult position with his colleagues from K1.