Renowned undersea explorer Dr. Robert Ballard, the man who found the Titanic, the USS Yorktown and the battleship Bismarck, joins four German Survivors on a journey back in time. Traveling to the bottom of the cold, dark Baltic to bring the world the chilling true story about the greatest maritime disasters in history. This documentary will show you details about the catastrophes and loss of over 20,000 lives the world knew nothing about for more than 60 years since the Soviet submarines torpedoed these three German evacuation ships packed with refugees and wounded soldiers in the final weeks of World War II.