When the 17-year-old Angelika moves to Leipzig, she is forced to rent a room at Mrs. Häublein’s for a start, since her parents will not follow until a few months later. Fellow tenant Thomas, a philosophy student, is not at all enthused about his new, pretty housemate. Because of Angelika he has to move into a smaller room. Furthermore, he is annoyed at her many male acquaintances, without sensing that his aggression might be prompted by jealousy. When Angelika’s father comes for a visit, he asks Thomas to keep an eye on his daughter. Thomas takes this assignment very seriously and finally realizes that he has fallen in love with Angelika. Now all he has to do is get rid of the annoying admirers: a naval officer, a press photographer, and a schoolmate.