When an elite assassin organization's legendary "godly doctor" awakens in the body of the Yun Family's despised Ninth Miss, she transforms her worthless reputation into unstoppable power. Dismissed as a useless wastrel by society, she shatters every expectation by becoming the world's first Magical Summoner, redefining what's possible. The Long Xu Kingdom's Third Prince rules from shadow and wealth, commanding the Zhou Dynasty's monopolized enterprises while masking his merciless nature behind a magnetic exterior. Though she appears to the world as a sickly, low-born outcast, she alone possesses his heart entirely. His arsenal of seduction is relentless—cunning schemes, dominating presence, calculated manipulation—all weaponized to claim her. This ruthless couple rises together through deception, genuine connection, and shared ambition, building a power couple destined to reign over an extraordinary realm.