Born without the powers expected of royalty, the eldest princess is branded a “useless villain” after a lie spreads through the court. Abandoned by her family, she is forced into a political marriage with a feared war hero known as a living demon. Refusing to accept a sacrificial fate, she turns the marriage into a gamble: raising her unpredictable husband into a revered saint to reclaim her honor. But when he flees on their wedding day, she pursues him to his desolate land determined to reshape both his destiny and her own.