The murder of the teacher Bruno Lohmann leads Vera Lanz and her team to a Munich high school. There, the inspectors had to find out that Lohmann was not exactly the popular type of teacher – neither among the students nor among their colleagues and parents. The investigators are confronted with ongoing Abitur exams on site, which put the students under extreme pressure to perform. The investigations focus on the students Julian Schröder, who was caught cheating on the last exam and who is again threatened with being accused of cheating, and the best of the year, Peter Behnke, who was the first at the scene of the crime and whose father Jürgen asked his son to question him want to prevent.
Finally, it turns out that the secretary and mother of the bad student Vanessa Willski had an affair with Lohmann, which ended shortly before. What did the students already have to do to pass the all-important exams? How far does the love of the parents or possibly the pressure of the educational system go?