Marianne is an accountant, but since she is so pretty the employment agency sends her to the theater. There, Max's gaffer falls in love with Marianne and persuades her to stay at the theater. Once he has to defend her against a professional boxer who harasses her. Although Max loses his position, but receives an offer from Box Manager Schmidtchen. When Max learns that Marianne is engaged, he goes to Schmidtchen's boxing school in Hamburg.