A German sabotage group is sent into the Vologda region. Its commander, a former Red Army sergeant Mikhail Averyanov, is a native of these places. In the German intelligence school, he demonstrated excellent combat qualities and exceptional devotion to the Reich. But in truth, such zeal was only camouflage. Once he ended up in his own territory, Mikhail surrendered to the SMERSH counterintelligence. After a thorough check, he is recruited to work against the Germans. Averyanov tries to atone for his guilt before the Motherland. But Soviet authorities have a special account with traitors—severe and merciless…