A countryside girl with off-the-charts combat prowess—Ah Qiao—shouts down an invading army with nothing but her razor-sharp tongue, earning a sky-high bounty from the Prince of Zhenbei to become the personal bodyguard of his spineless, pushover heir. On her very first day on the job, she unleashes a barrage of blackmail material meticulously logged in her little notebook—clashing head-on with the arrogant Second Young Master, the cocky Third Young Master, her scheming half-sister, and even high-ranking court officials—single-handedly overhauling the entire manor’s toxic culture.