Can Obann be saved? Must the West's great city fall to the barbarians?

The Thunder King's vast army encamps against the city, a ring of fire and steel. But treason brews inside the city walls...

The tiny army of the Lord is on the march against the undefeated horde, in bold obedience to a divine command; but the boy king, Ryons, marches all alone across an empty land. The Lost Book of Scripture have been found, but they may be lost again before the human race can read them. And Jack and Ellayne have been captured by the Heathen.

Prophets rise up in unexpected places, unlikely men and women perform deeds of desperate courage, and fantastic monsters stalk the night -- while the Thunder King stretches forth his hand to seize the world.