It is the 65th birthday of Wilhelm Lehmann, foreman of a chemical company. All members of the large family are expected. Preparations are also being made in the company: Wilhelm is to be awarded the »Labor banner« and, as every year, the sons are responsible for the may bowl. But instead of family members, telegrams with rejections flutter into the house.

The story of a philanderer behind the wheel of a cab, who gets into a series of hilarious but also adventurous situations, was based on the actual experiences of Berlin cab drivers. It is an entertaining portrayal of how the main protagonist, Eddy, is to be cleverly dissuaded from his dashing bachelor life. Gaby and her grandpa come up with a few ideas. This is necessary, because Eddy may be a proper cab driver, but in his private life he knows no rules when it comes to winning over pretty girls.