On the surface, "Haitian City" is an ordinary coastal city with a prosperous economy and convenient life. In fact, due to the destruction of many old ghost places and the accumulation of negative human emotions during urban expansion, it has become a "hotbed for the breeding of evil spirits." There is a group of passionate young people who take it as their duty to "protect ordinary people", and there are also some spiritual power holders who fight against evil spirits and evil cultivators in unknown corners of ordinary people, and maintain the "balance of yin and yang" in the city.