It is 1942 and the German submarine fleet is heavily engaged in the so-called "Battle of the Atlantic" to harass and destroy British shipping. With better escorts of the destroyer class, however, German U-boats have begun to take heavy losses. "Das Boot" is the story of the crew of one such U-Boat, with the film examining how these submariners maintained their professionalism as soldiers and attempted to accomplish impossible missions, all the while attempting to understand and obey the ideology...