The story follows a movie crew who is filming a musical in a small and idyllic alpine village. After their temperamental leading lady drops out of the film, they decide to replace her with the village's young post office clerk Gretl, who returns to Berlin with them. There she has to struggle with the movie's all-male crew, who all try to woo and win her.

Miss Inge Becker is a telephone operator. She makes an appointment with her unknown opera singer West. Simultaneously, Rainer, the young director of the telephone distribution, makes an appointment with him unknown Miss Lotte Schröder. The location of the meeting and sign of recognition of the two pairs are the same. An exchange with consequences cannot be avoided, as the next day the director wants to speak with Inge, because she neglects her service.