Instead of showing off his new cooking diploma, "Doctor Risotto", to his colleagues in the morning, Girwidz has to investigate a phone call about a complaint. At Café Rattlinger, a customer feels discriminated against - by Yazid of all people. When the two police officers arrive there, the caller is dead. It's Prince Meinolf XIII of Entenbach, who was banned from the bakery. Yazid swears that the well-known city resident collapsed without any external influence. Pathologist Dr. Fuchs diagnoses liver failure in the deceased due to the poison of the toadstool mushroom.