Based on

Movies like Wrong Number, Miss (1932)

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.