The protagonist Bao Zheng travels back and forth between the Northern Song Dynasty and modern times. When he travels for the first time, he finds that he has become Bao Zheng. At this time, the Kaifeng Mansion was facing a difficult case - the aftermath of the "civet cat for prince" case ten years ago was still unresolved. Although Empress Dowager Liu had passed away, the eunuch Guo Huai who participated in the case still had his associates in the palace, trying to harm Concubine Li Chen's descendants. A headless female corpse was found on the outskirts of the city, carrying a palace token, which implicated the shocking secret hidden deep in the palace.
