All libraries are magical. Some libraries are more magical than others. For Alex Reed, the world is an awkward place and books are her only escape. But when she is selected by a mysterious library to be its new Keeper she discovers that some books can be a lot of work. Now Alex must balance her new adventures with the incomparable obstacles of being an anxiety-riddled teenager. All this would be completely doable, if only Hank would do as he was told.

The multiverse is changing… What would you do if worlds depended on you? Sometimes you see a book, hear it call, pick it up, open it up, and read. Sometimes there is menace inside. Alex, Lilly, and Hank are back and are journeying once more into the worlds within the pages. But when the gods walk the earth, and reality is on a knife’s edge, what can one human do to stop a world from tearing apart? Now Alex must summon all the power she can muster or it won’t just mean the end for her, it could mean the end of everything. Step inside the most magnificent library that ever there was and defend the multiverse from the power of the void.