The Yan Shi family has had the power to control and purify nature since ancient times, and because of this rare power, people in the Yan Shi group are often attacked by monsters, so what is left today... Yan Xiaoxun is a 1 whose parents have divorced since childhood. A 6-year-old girl, because she lives with her mother, Xiaoxun does not know the preciousness of all her Yanshi bloodline. Since elementary school, many "strange" things have happened around her. Xiaoxun has long been accustomed to supernatural phenomena, but she instinctively does not accept it all. But she didn't know that when a member of the Yanshi clan reaches the age of 16, the spiritual power in their bodies will automatically awaken. At that time, the energy emitted by the spiritual power will lead to attacks by monsters. In order to preserve the only bloodline of the Yanshi clan, Xiaoxun's grandmother released the great demon that has been sealed for hundreds of years - Inugami Silver Fang.