Set in the Mongol invasion of Japan, this expansion pack features additional content, missions and the new playable faction of the Mongols. Historically the Kublai Khan, leader of the Mongols met catastrophic weather on the journey to Japan and so the invasion plan was abandoned before it ever truly began. In this expansion however, the Creative Assembly have re-written this detail in the name of strategy-based gaming. In the Mongol Invasion the invaders successfully land on the shores of Chikuzen. As either the Mongols or the ruling Hojo clan of Japan it is up to you to take Japan in the name of the Khan or repel the invading force and secure your homeland’s freedom.