Tyen is teaching mechanical magic at a school respected throughout the worlds. News arrives that the formidable ruler of all worlds, long believed to be dead, is back and enforcing his old laws - including the one forbidding schools of magic. As teachers and students flee, Tyen is left with no home and no purpose...except the promise he made to Vella, the sorcerer imprisoned in a book. Tyen must decide what he is...

Five years have passed since the Rebels confronted the Raen. Five years, in which the boy Rielle rescued, Qall, has safely grown up among the Travellers. Five years, in which Tyen has made a new home for himself, hidden from those who call him a traitor and the Spy.
Five years of chaos in the world, barely contained by Baluka and the Restorers. Worlds are at war, some overrun by machines, some drained of magic as sorcerers seek immortality.

As war threatens Rielle and Tyen's...