After finally achieving what had eluded even his grandfather Genghis Khan - the conquest of China - and inheriting the world's largest navy, Khubilai Khan set his sights on Japan. He commanded an immense armada, the largest fleet the world had ever seen and his success seemed assured. The Japanese were vastly outnumbered and facing certain death, but they prayed to their gods for survival and the very next day Khan's entire armada were destroyed...