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.