The year is 1943. Russian Counter-Intelligence intercepts a radio transmission which indicates the Germans' intention to destroy the production line of a new type of weaponry in Ural region. Commander of the Special Unit, Captain Greenhoff, arrives in the Ural region, but he is not the person indicated by his ID. Not many people know the know the technical name of this weaponry, but it is known all around the world as the rocket launcher: KATUSHA.