Ursula Karven (Andrea)Axel Milberg (Michael)Sergej Moya (Niklas)Oliver Breite (Roland)Isolda Dychauk (Lisa)Ines Nieri (Katrin Demel)Johanna Gastdorf (Ingrid Hoch)Michael Hanemann (Karl Matuschek)Anton Pleva (Benno Tielsch)Katrin Sass (Gwendolyn Scherbach)Tim Morten Uhlenbrock (Rainer Stegmüller)
Andrea is a teacher at a gymnasium in Lübeck. She prefers to convince her students with arguments rather than punishments. But it can also be very specific, such as averting the advances of her problem student Niklas, who has fallen in love with her, much to his classmate and girlfriend Lisa's grief. On a school trip, the situation comes to a head, Andrea feels increasingly pressurized by Niklas. Her husband Michael is not much help in this situation; the dentist has just started a new job and his mind is solely on his research. Jealous Lisa tells around school that they do have a relationship, and their marriage is tested.