Irene is a librarian (the reason I requested this book from NetGalley) who collects books from various realities because... well, that wasn't explained in this book really. It stabilizes the worlds or something? But her apprentice, Kai, who is a dragon (and maybe Irene is interested in him more than just as an apprentice), has been kidnapped. And he's been taken to a realm of high chaos where even his super-powerful uncle can't go. So Irene has to pair up with one of the Fae, Lord Silver (who was maybe a bad guy in the first book?) to help get him back.
Again, not a lot of backstory (which can definitely be appreciated) but I can tell this is probably a going to be a great series.