All against one! And Juli Zeh and Elisa Hoven against prejudice. A crime has occurred in class 5a: Marie, the most popular girl in the class, has had her lunch sandwiches stolen. It quickly seems clear that only one person can be considered the culprit: Konrad. He is new to the class, hasn't really settled into the school yet, and hasn't made any friends. Instead of spending recess on the playground, he prefers to stay in the classroom. So who else could it have been? However, Konrad is not aware of any wrongdoing. This leads the children to the idea of holding a trial to discuss guilt and innocence. It turns out that everything is quite different from what they initially thought.