With the Nazis encroaching deeper into the USSR, the defenders mobilise a small unit to penetrate the enemy lines and try to find out just where they are storing their fuel and unloading their vast supply of tanks and other munitions. They've gathered enough intelligence to appreciate that if this squad can't get this information, then an enormous invasion will start for which they are ill-equipped to deal. The task is handed to the young "Travkin" (Igor Petrenko) and his half dozen soldiers and so they set off into the hornet's nest. On the face of it, this is just another wartime adventure…