Flee across the sun-and-shadow islands of Eratia, where runes have the power to unleash monsters... Seven years ago, Karis was forced to become an acolyte for the Scriptorium, the rune scholars who rule Eratia. For centuries, these Scriptmasters have sought the key to reanimating the country's fearsome automaton army, and anyone they deem unable to help them achieve their goal is sent away...including Karis's brother, Matthias. Then Karis discovers...