"I dedicate my life to the fight against darkness and will serve all seven clans equally." With this vow, Twelve leaves her old life behind to be trained as a huntling. Not even her mentor Silver suspects that Twelve has her own plans: a burning desire for revenge against the clan that once wiped out her family. But everything changes when goblins attack the hunting guild, kill Silver, and kidnap the girl Seven. Alongside the magical stone dog that has always protected the guild, Twelve pursues her adversaries through ice and snow, all while confronting her past.