During the Dayin Dynasty, strange things happened frequently in various places. Villages were deserted overnight, strangers were kept away from ancient houses, and corpses floated in rivers. <Su Qingci> As a descendant of the Qin Tianjian of the former dynasty, he inherited the family's secret skills and used a green lantern as a guide to travel around to detect evil spirits. She doesn't have any extraordinary golden fingers. She only relies on what she has learned from ancient books and careful observation to track down the truth in layers of fog. From the "soul exchange ceremony" in a remote mountain village to the "painted skin case" in the prosperous capital, behind every strange incident there are human desires and age-old secrets. As the investigation deepens, she discovers that all the strange things point to a mysterious organization, and the ultimate goal of this organization is to subvert the foundation of Dayin. Su Qingci could only fight step by step, using a mortal body to start a life-and-death battle with the invisible "boss"