About the struggle between criminal investigators and the criminal world. Based on real events and documents, the film recreates the atmosphere of 1920s Russia, which was swept by a wave of violence... At the heart of the story is the fate and career of a young man who, together with his comrades, is about to make history in Soviet criminal investigation...
A former officer of the Separate Border Guard Corps accepts an offer to head the customs service of the young Soviet state.
On instructions from Polish intelligence, a group of bandits dress up in Red Army uniforms and attack a Soviet border town.
