The fate of an infinite library hangs on one book, a book that holds the power to break the unbreakable. In the face of such forces, fragile things like hearts, worlds, and even family seem certain to fail.

The people most vital to Livira are scattered across time and spacelost, divided into factions, in mortal peril. Somehow she must bring them together and resolve the unresolvable argument that fuels the librarys war.

The bond between Livira and Evar has stretched and stretched again. Can it hold at the end, when things fall apart? Can it unite them against impossible odds?