A day in the city of Berlin, which experienced an industrial boom in the 1920s, and still provides an insight into the living and working conditions at that time. Germany had just recovered a little from the worst consequences of the First World War, the great economic crisis was still a few years away and Hitler was not yet an issue at the time.

Four bandits commit a robbery in a villa. The maid calls the police and Commissioner Carli immediately orders patrols to chase them.