Evelyn, the First Princess, lacks the supernatural ability essential for royalty. Through lies orchestrated by her younger sister Rosalie, she has become despised as an “incompetent villainess.” Abandoned by her family, Evelyn is forced into a political marriage with Lieutenant David, a war hero feared as the “Demon of the Battlefield.” Rather than accepting her fate as a sacrificial pawn, Evelyn decides to turn this marriage to her advantage. Her goal: to make David earn the globally prestigious title of “Saint,” thereby proving her worth and silencing her family and society. However, right after their wedding vows and ceremonial kiss, David flees from the ceremony—!? Evelyn travels to his desolate territory. Can she guide this capricious, “demon-like” husband into becoming the “saint” she envisions?