The line between mortal and divine blurs as an ancient threat resurfaces, determined to plunge New York into chaos. Eryx Ross, now fully embracing his destiny as Apollo's vessel, must navigate his burgeoning powers and deepening bond with the enigmatic Alexander Knight, the mortal embodiment of Hades. Together, they face an unconventional challenge that will test their love and the very fabric of their world.

Amidst the gathering darkness, Eryx and Alex's souls entwine on a cosmic scale, their love a beacon of hope against the sinister machinations of the Order. They rally allies both old and new, gods and mortals alike, to stand against the rising tide of evil. But the Order holds a terrifying trump card - a mimic with the power to steal magic - threatening to unravel all they hold dear.