 Set during the Battle of Atlantic during the Second World War, "The Enemy Below" tells the story of the cat and mouse Destroyer escort/U-Boat hunt. For the Americans, a former Merchant Mariner who saw his wife killed when his freighter was torpedoed by the Germans. For the Germans, a veteran U-Boat commander who sees no honor in the German aims of the war. Both of these highly experienced men must now battle each other, knowing that only one will survive.