Rakshasa, a criminal investigation policeman, possesses the secret technique of "Soul-Suppressing Key" and uses the power of Zhengyang to destroy evil and exorcise evil spirits. A list of hidden murderous intentions reveals the shocking conspiracy of the Xuan Sheng Cult and the organization with the word "Xuan" - in order to collect the fragments of the Xuan Suppressing Cauldron and awaken the ancestors of the Xuan clan, they abused hypnosis, curses, and ghost magic, sacrificed human beings to refine evil weapons, and turned innocent people into victims of resentment.
From the soul-inducing array in an abandoned factory on the outskirts of the city to the secret realm of ice and fire in Kunlun's Wanren Peak, Rakshasa and the police pursue the murderer step by step: breaking the curse of the three yins, counteracting hypnotic magic, hunting down escaped warlocks across domains, destroying cult strongholds, and awakening the evil-suppressing artifact Xuanyang Mirror. He launched a life-or-death duel with opponents such as Xuan Ying, Xuan Ju, and the high priest who were proficient in evil arts. He witnessed the tragedy of the righteous magicians falling into evil paths due to hatred. He also adhered to the belief that "secret arts have no good or evil, and human heart is the key."
This battle between good and evil that spans thousands of years is intertwined with the battle of secrets, the protection of cultural relics, and the game of human nature. Using the righteousness of heaven and earth as a blade and the wisdom of criminal investigation as a shield, Rakshasa uncovers the mastermind behind the scenes in layers of fog, rescues innocent hostages, and finally purifies resentment with justice, allowing evil spirits to have no escape. Every page of the criminal investigation notes is engraved with the obsession of "sticking to justice and suppressing all evil in the world."