Jacob White, a human youth bullied relentlessly at Hoss Academy, is framed by Owen, the young lord of the Bloodclaw family, and accidentally drawn into the world of the werewolf king Leon Black. The cold, domineering Leon discovers by chance that Jacob is his destined Luna, moving from possession and protection to deeply loving him. Yet Owen, consumed by jealousy and obsession, repeatedly colludes with outside enemies, framing Jacob and plotting against Leon, even staging a rebellion to seize power. Jacob grows through pain and betrayal, transforming from a human boy at everyone's mercy into a companion capable of standing beside the werewolf king. In the end, beneath the blood moon, the two shatter the conspiracy and complete an eternal covenant, becoming the destined lovers witnessed by the entire Bloodclaw family.