The nuclear submarine K-119 "Voronezh", having set out on a campaign in our time, fails in 1942. And there is nowhere to return - no more base, no home. St. Andrew's flag, a double-headed eagle on the wheelhouse, shoulder straps on officers - will they be accepted in the Stalinist USSR? But there is no doubt on whose side to intervene in the war, because if the Germans win, there will be no Russians at all. Summer of 1942 - nothing has been decided yet. And very soon the fascist battleship Admiral Scheer will try to destroy our caravan traveling along the Northern Sea Route. And there is no one to stop him except submariners from the twenty-first century.