For centuries, the two Great Guilds have controlled the world of Dematr. The Mechanics and the Mages have been bitter rivals, agreeing only on the need to keep the world they rule from changing. But now a Storm approaches, one that could sweep away everything that humans have built. Only one person has any chance of uniting enough of the world behind her to stop the Storm, but the Great Guilds and many others will stop at nothing to defeat her.