In 1951, East Berlin's railroad transportation fund was robbed in a spectacular burglary. The vaults contained the West Marks that the East Berlin Reichsbahn administration collected through its services in the West sectors of Berlin.
The municipal gasworks are equipped with ultra-modern electronic booking machines. Lothar Krake, a small employee, is working on such a monster and makes a typo. He doesn't dare admit the mistake for fear of losing his position. With the wrong name, he creates a new customer named Alexander...
