During the investigation of a murder case, the divine catcher Chen Yanzhi and the brothel courtesan Yue Ruhuan have their souls swapped. Forced to play each other's roles—the catcher serving guests and the courtesan investigating cases—they enter into a contractual marriage in search of the truth, forging a miraculous and predestined romance. One is an unflagging divine catcher of the imperial court, while the other is a renowned female bandit of the martial arts world. Overnight, enemies turned husband and wife stage a cat-and-mouse game!