During the reign of Renzong in the Northern Song Dynasty, the government was initially stable but undercurrents surged, and disputes between the rivers and lakes and the court quietly spread in the city and countryside. Bao Zheng, a talented man from Luzhou, embarked on a journey with meticulous intelligence and integrity, but he was accidentally involved in a series of bizarre mysteries. In the ancient temple where incense is flourishing, he encounters Gongsun Ce, a conceited and erudite Yangzhou talent, and Nan Xia Zhan Zhao, who is chasing bandits. The three of them test each other and join forces to break the situation, and gradually become close friends who share life and death. Chu Chu, a clever and innocent village girl, provided assistance in the investigation and joined the team since then, becoming the warm "pistachio" and logistical support of the foursome.
From the strange murder case of the Blood Buddha in the ancient temple to the disguise mystery of the painted skin in the ghost house; from the theft of disaster relief money from the canal shipwreck to the ancient grievances of the theater puppets, the four-person team traveled north and south, visiting temples, mansions, borders, and palaces to solve 25 brand-new mysteries. Behind every case are hidden room murders, serial crimes, conspiracy and conspiracy, and conflicts, the good and evil of human nature and the hidden pain of society. Gongsun Ce assisted in investigating the case with Qimen Dunjia and medical and toxicology skills, Zhan Zhao relied on his strong martial arts to escort the case, Chu Chu used herbal knowledge and pure temperament to resolve the crisis, and Bao Zheng always used legal principles as a ruler to explore the truth in the fog.
During the investigation, the friendship between the four people became deeper and deeper in the wind and rain: Bao Zheng and Chu Chu secretly fell in love, and Gongsun Ce and Zhan Zhao went from being dissatisfied with each other to cherishing each other. As the case progresses, Bao Zheng accidentally touches the mystery of his own life experience, and a huge conspiracy involving palace secrets gradually emerges. Faced with the plot of the traitorous officials in the court and the counterattack of Jianghu forces, the four-person team adheres to justice.
