Once, the sun and moon were a single deity, but cleaved themselves in two to create time. Their "darkness" became sentient—and now seeks to return all to chaos.

The sun and moon are the two most paramount celestial bodies, each with its own Guardian. Adrian had always known he would serve the sun.

I strongly recommend familiarizing yourself with the descriptions of the "temples" corresponding to the two Guardians and their particular powers; they are detailed in the Scenario section.