When Crown Princess Aurelia escapes an arranged marriage to a brutal warlord, her loyal knight Caelum becomes both protector and predator. Bound by a blood oath that awakens his dormant Lycan curse, their dangerous alliance ignites a passion that threatens to consume kingdoms. With the Holy Inquisition hunting them down with silver fire, Aurelia must use her forbidden prophecy magic to break the oath - or become the Lycan King's eternal mate. But in a world where love is heresy and the moon demands sacrifice, survival may cost her humanity.