In a subterranean world ruled by tradition, Runt is an outcast in her own family. When her father’s archaic will forces her into a new role, she becomes the reluctant Keeper of the clan’s most sacred—and repulsive—creature: The Peeve. Her duty is disgusting, but as Runt’s secret passion for song awakens a strange power within the creature, she uncovers a terrifying secret that devours the unsuspecting. In the deepest caverns, some traditions are meant to be broken, and some secrets are hungry.