An old woman is arrested in the Berlin subway for trying to smuggle a telescope to West Berlin. Meanwhile, the body of an optical device dealer is found in a garden plot. But what is the connection between these two cases? 

The agency for optics racketeering has suspected the existance of a smugglers' gang for some time: premium quality GDR optical devices are in high demand in Spain, so there is good money to be made in smuggling them out of the country. It is Second Lieutenant Schellenberg who discovers the gang's meeting place. In addition to tracking the criminals, Schellenburg finds himself hot on the trail of love when he becomes romantically involved with the clever optics saleswoman Sabine.

This crime drama is based on a true story.