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 willing to do to free her. After five years among the tapestry weavers of Schpeta, Rielle's peaceful new life has been shattered by a local war. As defeat looms, the powerful Angel of Storms appears and invites Rielle to join the artisans of his celestial realm. But what will he require in return for this extraordinary offer?