Following a series of murders, it turns out that a notorious criminal believed to be dead is seeking revenge for his sister’s murder. Although the motive is obvious, the phantom cannot be apprehended because no one knows his identity. In desperation, one of the most experienced detectives is brought out of retirement.

In their second feature film, the famous Hessian radio comedy family Hesselbach goes on a vacation trip.

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 convinces him that one of his best friends should be willing to marry her for a contractually agreed short period of time and then divorce her again after the child is born. She suggests Peter, of whom she has a portrait, to whom she talks secretly. Georg persuades Peter to marry Lis and he stands by his friend ...

Edgar Koltz travels back to Germany from his vacation destination on Mallorca. Koltz, who is traveling under the false name Heinrich Hauser, wants to use the 48-hour break in his vacation to rob the Munich Commercial and Credit Bank. He is called out under this name shortly after landing at the airport. Koltz receives an envelope containing an address where he can obtain further information. Later, the driver of the 8:10 train discovers a body on the tracks. The police have to establish whether there is a connection between the discovery of the body and the bank robbery in Munich.