Under the surface of the prosperous Kaiyuan era, there are turbulent undercurrents. Seven pregnant corpses were found in the belly of the ancient Guanyin Buddha in Bianzhou. Weird rumors that the Buddha was crying in the middle of the night and blood oozing from his palms spread throughout the city, and people all said that it was a divine punishment. The censor Song Jing was ordered to investigate the case, prying open the secret passage of the Buddha statue, digging out the elixir for refining corpses and secret letters from the court. A murderous case among the people suddenly involved a monstrous conspiracy. All clues point to the eunuch Gao Yanfu who was supposed to die in Lingchi. At that time, he bribed the execution ground, used the death penalty stand-in Jin Chan to escape, assumed the alias of wealthy businessman Jin Dacai, secretly embezzled 7 million silver from the two countries' treasury, and laid a huge black network under the name "Gold Master". He pretended to use the old Taiping ministry as a cover for revenge, kidnapped pregnant women with killers to refine poison pills, used chronic poisons to manipulate civil and military officials, and colluded with Turkic border forces in an attempt to subvert Li Tang's country. The governor, the drug dealer, the cold palace servants, and the border generals all became his pawns. Those who knew the truth were silenced one after another, and the puzzles were piled up one after another. Song Jing deduced step by step, breaking into the secret room, interrogating the rebels, digging deep into the secret cave of Luoyang Wuyuan, and tearing apart the three shocking scams of the opponent's fake death, refining medicine, and forming a clique. The ghost of an enemy before the Buddha, corruption in the court, and the conspiracy to restore the Wu family are all intertwined. Song Jing uses the law to break through the fog and fight against the giant behind the scenes who has been entrenched for decades.