In the dazzling city, demons and monsters lurk, preying on humans. Under the veil of shadows, people vanish almost daily, reminiscent of the shocking nationwide zombie incident and the Cat Granny case... Yet, humans are the supreme beings, and for every demon that feeds, there is a demon slayer born to counter them. From Quanzhen and Zhengyi schools to high monks, prominent families, and various sects—by day, they attend to their respective duties; by night, they hunt demons and eliminate evil! Follow Lin Fan, who inherits the legacy of an Onmyoji, as he wields his flying sword and dominates the three realms!