The story is set in a modern city called "Qingyang City". On the surface, it is a prosperous new technological city, but in fact it hides countless supernatural secrets. Thousands of years ago, this place was the place where the ancient evil god "Taotie" was suppressed. Now, with the development of the city, the seal has been loosened and the Yin Qi is overflowing. There are two overlapping but independent spaces in the city, the "Yin Ruins" and the "Yang World". Ordinary people cannot detect the strange things in the Yin Ruins. However, when the resentment and Yin Qi reach a certain level, cracks will appear in the two spaces, causing supernatural events.
The village guards are a special group who have guarded the seal of Yinxu for generations. They have yin and yang eyes, which can communicate with yin and yang and suppress evil spirits. The village guardian clan once settled in "Yinlong Village" around Qingyang City. However, with the process of urbanization, Yinlong Village was demolished and the village guardians were scattered everywhere, but they still performed their duties as guardians.
