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.

Post-war Germany: Like so many other women, Gerda Krause has lost her husband during the war and has to fend for herself and her two children. She finds work as a seamstress but refuses the offering of her department chief Zimmermann to upgrade her qualifications. One day she meets Uschi, an old friend of hers, whom she has helped with schoolwork before the war and subsequently lost track of. The reunion reminds Gerda of her childhood dream: to become a teacher. Thus, she decides to enroll at university to make her dream come true.

An old man living in an oriental city tells the story of his life to a group of kids: He too was once a young boy by the name of Little Muck - much like them, but with better manners and a heap of problems. Having lost his father at early age, little Muck is expelled from home by his greedy relatives. He wanders off into the desert hoping to find the merchant who sells good fortune. Amidst the dunes of sand he comes across a small house owned by a wicked woman and her many cats. She wants to make Little Muck her servant, but he manages to escape by stealing a pair of magic shoes which enable him to run faster than any man in the country. From there he heads right into the next set of challenges...