Stille Post plot
Andrea Jahn is a teacher at a gymnasium in Lübeck. Because she has lost her driver's license, she has to take a refresher course in traffic. One evening she meets one of her students, Niklas, a problem child who falls madly in love with her. However, she rejects him. Her husband Michael, meanwhile, is too busy with his dental practice to really care about her, but Andrea doesn't think it's a good idea. However, a jealous classmate tells them at school that they are having an affair, putting Andrea's marriage to Michael to the test.