In the first year of the Great Zhou Dynasty, monsters appeared everywhere, cruelty to living beings, corruption among officials was rampant, and the world was dark and dark. Li Huaiyun, as a D-level monster catcher at the lowest level of the Demon Slaying Division, carried a unwillingness and obsession, holding a talisman and a blade into this troubled world. Faced with the double dilemma of demon disaster and human heart's evil, he worked step by step, vowing to split the chaos, climb to the pinnacle of the demon hunting world, protect the peace of one party, and become a legend of a generation.