Shen Qingning, a girl with divine power - she seems to live in seclusion in the city and runs a mysterious courtyard called "Jianxue Pavilion". In fact, she is in charge of the order of yin and yang and is an existence older than the way of heaven.
Due to the damage to his soul after an experience in the human world, Shen Qingning's temperament has become elusive, but he has gained the most cherished friendship in the world: Yan Qian, the bamboo horse who has been with him since the beginning of the world, and is now the Lord of Hell; He Liangzhu, the ghost of the actor who followed him because of his obsession in his previous life. Three people in one hospital guard the balance between the yin and yang worlds, and also guard each other.
However, the peace was broken by a series of strange events: the recurring nightmare in the abandoned teaching building, Dormitory 301 where countless wish-makers were trapped, the female ghost who died tragically in Qinglin Village, the girl who was buried alive by her parents for a secret marriage, the evil cultivator who refined ghosts in pursuit of immortality... Behind every supernatural event, there is a human heart that is more terrifying than ghosts - jealousy, greed, indifference, betrayal, are the deepest evils in the world.
As the investigation deepens, a conspiracy that has been dormant for decades comes to light: the Japanese Onmyoji organization, headed by Takahashi Kayo and Minami Yunko, is trying to use the resentment in China to resurrect the demons Shiro Ishii and Manqiu Shinohito from the war of aggression against China. What is even more shocking is that Shen Qingning was also injured at the hands of these mortals back then.
