Steven Nobel is a very shy schoolboy. He often finds himself in awkward situations and speaks out of place. And yet he tries to control his life and therefore keeps a strict record of all his mistakes. And not only his own... That is why Stephen notices many interesting things. Why do different people drive the same car? Why did the police blow up his classmate's backpack? Who broke through the school wall? These are all mistakes that someone has made. And these are crimes, and Stephen Nobel will certainly solve them!