In a parking garage, a huge pool of blood is found. What’s missing is the body. Chief Inspector Pit "Struller" Struhlmann and his intern Jensen pick up the scent. Like bloodhounds. What does the music producer, whose yacht is anchored directly across from the parking garage in the Düsseldorf harbor, have to do with this? What role does the spider Petra, whom Struller knows from his youth, play? It’s only when a dead body is discovered in a garbage truck and an informant contacts Struller that an extremely diligent cleaning crew, a kilo of cocaine, clues about illegal dog fights, and the Düsseldorf championships in bar curling come together to form a promising lead. This lead is hot, but foul. It stinks. And ultimately leads to the sewage treatment plant in Düsseldorf-Hamm.