Hatifa is tired of her difficult fate and escapes from the place of her enslavement, a quarry in the desert. There she wanders around in freedom, but ultimately helpless, without water or food. Shortly before dying of thirst, she is saved by the sage Simsal, who is traveling with a caravan of the merchant Ganem. Hatifa quickly makes many friends, including the young servant Hodja. Only to him she confides her secret. The girl had to keep the fact that she was a slave to herself. After all, anyone who helps escaped slaves is mercilessly threatened with the death penalty. Out of consideration for the caravan, they both flee, but are soon picked up by Ganem. When he realizes that he can make a lot of money with Hatifa, he sells her again to a quarry.

At the end of the 1950s, the production of optics in the German Democratic Republic has reached top quality and instigates interest in the West. When national demand rises strongly and at the same time the export to South America heavily decreases, the Volkspolizei - the GDR police force - starts to look into the case. Two seemingly unrelated cases are the starting point for the investigation by second lieutenant Schellenberg of the department for optics racketeering: An old woman who was arrested in the Berlin city railway for trying to smuggle a pair of binoculars to West Berlin, and a dead person in an area of allotments who was involved in obscure dealings with optical devices.

In London at the turn of the century, underworld kingpin Mack the Knife marries Polly Peachum without the knowledge of her father, the equally enterprising 'king of the beggars'.