Carnival in Munich. The body of a 70-year-old man is found on a staircase on the banks of the Isar. A first trace leads to "Irmis Stüberl", where the man apparently had an argument with a costumed carnival guest. The most important witness of the argument is a "Little Red Riding Hood", who is clearly too drunk to be questioned that evening. Batic and Leitmayr therefore take it with them without further ado. SilkeWeinzierl (Nina Proll), as "Little Red Riding Hood" is called, is very angry the next morning. She obviously slept really badly in the detox cell. No, she doesn't know the man and doesn't know why the argument came about. It quickly becomes clear: Batic and Leitmayr (Miroslav Nemec and Udo Wachtveitl) are not only dealing with a tricky case, but above all with a very unusual woman...