Modern forensic doctor Chen Jing traveled through the Northern Song Dynasty and became an apprentice in Kaifeng Mansion. Relying on criminal investigation technology that transcended the times, she helped Bao Zheng solve an "impossible" case of a headless corpse. When the strange bronze mirror, the hidden triangular stab mark on the body, and the crescent mark on her forehead were connected in series, Chen Jing was shocked to realize that she had not come here by chance - a revenge mystery that spanned a century had been waiting for her to wake up.
