May 1942. In the midst of the Great Patriotic War, far from the front line, at a godforsaken junction, the Nazis throw out troops in order to get onto the Kirov railway and the White Sea-Baltic Canal. These are not ordinary infantry soldiers, these are experienced, trained saboteurs, the elite of the SS troops, "supermen". And against them - foreman Vaskov and five anti-aircraft gunner girls. It would seem that a battle of local importance, but at stake is a strategically important transport artery connecting the significant centers of the country. Can the sergeant major and his fragile recruits prevent Nazi sabotage, and at what cost?