Hotel manager Lis has loved the doctor Dr. med. Peter Arco since her childhood, who could theoretically be her father, still sees a child in her and is also the best friend of her brother Georg. Since Peter lives alone as a confirmed bachelor, Lis thinks of a ruse. She claims to be pregnant, but to have long since left the father of the unborn child. Georg, who wants to run for mayor in the next election, could cost his almost secure position with an illegitimate child in the family. Lis convinc...