The Peppercorns

The pepper grains Laurenz, Yeliz, Lilly and Karol have to move out of their headquarters, a warehouse floor in the Speicherstadt. Laurenz's parents want to sell him to a seemingly respectable businessman, Peter Meyer, the very next day. However, while doing research on Peter Meyer online, the children discover that Meyer is connected to the HDNJK, the so-called Hanseatic German National Youth Fellowship – a neo-Nazi group. Yeliz is caught trying to film the group and can only escape with Karol's help. Since the film material is also damaged, the detectives are unable to use the Krogmanns' activities as evidence to prove Peter Meyer's machinations. After an argument between Karol and his mother about his friendship with Yeliz, Karol goes undercover to the HDNJK open house to collect new evidence against Mr. Meyer instead of going to his cousin's baptism.