In Russia, Lenin and the Bolsheviks have seized power and the Russians choose to make peace with Germany and withdraw from the war. To Germany's great disadvantage, however, America has decided to join World War I on the Allied side after a German U-boat sunk the British ocean liner Lusitania with 128 Americans aboard. In 1918, both the German and Austrian armies have suffered great casualties at the hands of the Allied forces and the new Austrian Emperor Karl begs Kaiser Wilhelm to make peace with the Allies before it is too late. (thetvdb.com)