In the bloodline-valuing wolf clan, Aivi, abandoned daughter of a low-rank gray wolf, sneaks into King Kane's forbidden Cracked Moon Ridge for the Red Moon Spirit Bones to cure her son Noah's illness. She rouses Kane; they discover Noah is Kane's son—his sickness a forbidden human seal. Villain Silas schemes to usurp the throne, coveting Noah's royal blood. Aivi awakens Moon Sacrifice power, exposes the conspiracy, helps Kane reclaim the throne and abolish the pure-blood system.
