Paul Winkelmann is the CEO of a successful business in Hamburg that he took over after the death of his father eight years ago. But he is still strongly dominated by his 78 year old mother who cares for him as a child, and who cannot understand why he took an apartment on his own after all these years. The real "problem" starts when Paul gets to know psychologist Margarethe Tietze whose relationship to her parents is also not so easy after all.

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.