In her past life, the incense master Zhu Xiaoman transmigrated to Qingshi City, where mist beasts run rampant. She was expelled after exposing fake jade from the chamber of commerce, but accidentally awakened the Pupil of Truth discerning truth from falsehood, reading traces, and reviving dead jade. She opened a genuine goods shop to verify authenticity and crack down on fakes in the streets. From fake jade harming people to treason, she step by step ferreted out the two major culprits, the hypocritical rich merchant Zhou Houde and the Xuan family of the northern border, uniting merchants, artisans, and commoners to launch a desperate counterattack, and finally following Imperial Censor Fan into the capital to face the deeper political currents of the imperial court.