In her previous life, Pei Zhao was exploited by the prince Xiao Chengye, and her entire family was falsely accused, poisoned, and killed. Reborn at the very moment her family is about to be condemned, she rejects her fiancé's marriage proposal and enters the palace alone, lying low in the Shangyi Bureau. Secretly investigating the shocking conspiracy involving disaster relief silver and military uniforms for private troops, she joins forces with the long-suffering Ninth Prince Xiao Jinghe to dismantle the Sixth Prince's schemes of framing her family, step by step. At a grand court ceremony, she uses account books and documentary evidence to expose the sinister power-grabbing plot behind everything and finally clear her family's name of its terrible injustice.