The Last Key - The Chronicles of the Ancients, #3

A demon army is at the Red City's gates. Southern horsemen raid the countryside. The country burns, but the heroic efforts of the Red Guard and its citizens hold off total destruction while Morgan searches for the last key to control the ancient Mechic weapon from the Great War. Is it worth it? What good would come of following the words of the mysterious 'K'? With new allies at his side, along with the famed Ancients, King Morgan fights for the very survival of his kingdom and the world as his enemy fights to become an all powerful god.