The Abyssal demigoddess, Xanos, has nearly destroyed the Overworld. During a recon mission of a Razor Echelon base, Justin and Elyssa uncover Xanos's new weapon. The Apocryphan is building a portal device that could allow her to transport troops anywhere, including right in the middle of Queens Gate. The Eden forces have nowhere else to run, so Justin seeks the aid of allies to prevent the obliteration of the supernatural resistance. They learn that a woman might be the key to salvation. She has the power to open portals between realms and from one place to another within realms. With her help, they could counter Xanos before the portal device is completed. But first, they have to find this woman. She's been missing for years, presumably hiding from Baal and his minions in another realm. Justin discovers there might be a way to track the portals she's opened before. So he and the gang start off on their most dangerous mission yet: traversing unknown realms with the faintest hope of finding the one woman who might save them all. That woman is Emily Glass.