Ingmar Brix, the father of Jon's girlfriend Maike, is found hanged from the bell rope in the church tower. It soon becomes clear that it was not a suicide. Neither Maike nor the pastor is suspected of the crime, even though the latter flirts with Nora during the interrogation. School principal Kluger is the focus of Jon and Nora's investigation. He is a former friend of Brix's who bought a lighthouse equipped with multiple telescopes for half a million euros. Jon pays Nora her first compliment, and the two begin to appreciate each other's qualities.

Mr. Hu, the owner of the "Mandarin" restaurant, finds his dead son in the restaurant's basement. Jörn Fleischer becomes a suspect in the murder. He is the manager of the "Hummer" restaurant, which is on the verge of closing. Ever since the cheap Chinese restaurant opened, Fleischer has been losing more and more customers. But Inken Blume is also a suspect. The overzealous animal rights activist is determined to avenge the death of her loyal cat, "Herr Storm," by any means necessary. She even mobilizes the health department against the Chinese restaurant, which she claims is slaughtering cats. Jon and Nora skillfully separate the wheat from the chaff.