It was the greatest catastrophe in naval history and left over 9000 dead – six times more than in the Titanic disaster ... The fact-based event two-parter portrays the tragic fate of the Wilhelm Gustloff, which set sail during the last months of World War II: the desperate struggle of thousands of refugees to board the ship; the murderous incompetence of rival authorities; the counterproductive, fateful interplay of four captains; the cataclysmic sinking of the torpedoed ship in the icy Baltic Sea ...