From the introduction:
Uncountable aeons ago, when only chaos would be apparent to Creation-born eyes, the Primordials came to gather. All of them worked together and contributed, creating a world to serve as their palace, playground, and fortress against the wyld. Their works complete, most of the Primordials retreated to Yu-Shan, the Heavenly City. They took their leisure, while newly created gods were left to maintain their new world. This was Creation, long ago. Then came the Primordial War. The Unconquered Sun, greatest of the gods, gathered his fellows in secret and spoke to them: “Our creators recline in wicked splendor while we toil forever upon the slopes of a lonely mountain. Let us overthrow the Primordials, that we might take our leisure at the Games of Divinity. Let us take men and give them the favor of the gods, and use them as our champions against the Primordials.”