In the 10th year of the Great Jingjing, Su Zhenhai, a widower, was accused of "collaborating with the enemy" and died tragically because he exposed corruption in water transportation. Twelve-year-old Su Yexue hid in the woodshed of the imperial prison, clutching the blood-stained "Secret Records of Drug Testing" and vowed to clear her father's injustice.
Ten years later, she came to Beijing as a border refugee "Axue" and lived in Yizhuang, hiding in the market with her skills in autopsy and identification of poisons.
Watching helplessly as the embroiderer was falsely accused of stealing a bracelet and sinking into the pond, and the beggar was poisoned and falsely claimed to be a "violent death", the power of the Wei party was overwhelming, and unjust cases occurred everywhere. As a result, she transformed into the "Judge of the Night": relying on her autopsy skills, she skillfully killed villains and avenged innocent people...