A Russian missile submarine disappears without trace during a secret mission in the Greenland Sea. A vessel is deployed to search for it, captained by the brother of the missing…

While digging one of the many tunnels for the Moscow metro, Soviet workers unearth ruins of a dungeon. The site is closed, the metro tunnel is diverted, and amidst the…

At the height of the Cold War, a troubled soldier forms a forbidden love triangle with a daring fighter pilot and his female comrade amid the dangerous surroundings of a…