Allison Ruth is about to have sex for the first time with her boyfriend, when strange beings appear. One puts some sort of key into Allison's head and the others kidnap her boyfriend. Allison is sent to Throne, the ancient city at the center of the multiverse. With help of an angel peacekeeper she must keep her self alive and find away to rescue her boyfriend.
The universe and its mythology are complex and rich. It perhaps rivals the world of Smylie's Artesia in that regard, though it has a very different style and tone--more akin to Prophet, perhaps. Comparisons to Exalted would not be unwarranted, though mainly in its dealings with an exotic world full of gods and demons. It's definitely worth a look.