„White mouse“ Fritz controls the traffic on Dresden’s Körner Square. Helene, who crosses the junction on her motor scooter every day, has taken a shine to Fritz a long while ago. Although Fritz yields right-of-way to her remarkably often, the two have not spoken to each other. In order to finally get to know him better, Helene deliberately performs a traffic violation. Her plan is working: She is ordered to take road safety education lessons from Fritz and they get closer. New problems arise in the shape of Mrs. Messmer who must pay a monetary fine. She feels discriminated against by Fritz and complains about him to his supervisor.