After the celebrated "Hero" slays the fearsome Ogre King and liberates the kingdom, a young scribe is tasked with cataloging the Ogre's vast, surprising library. She discovers the slain monarch was not a monster, but a philosopher-king whose writings reveal a shocking truth: the "hero" is a plague, a cyclical force of destruction summoned by the kingdom's own unresolved sins, and the Ogre's territory was the only thing keeping a far greater ancient terror sealed beneath the earth.