The world is not as simple as we see it. The folk customs, taboos, and rituals passed down from ancient times are not entirely superstitious, but the survival rules of the ancients in dealing with the deep world. The deep world is composed of human beliefs, the collective subconscious and the "echoes" of the earth. However, with the process of urbanization and rationality, the firewalls built by these ancients gradually became ineffective. The forgotten "gods" turned into resentment, abandoned rituals triggered curses, and traditional folk customs began to run rampant in modern society. Chen Shi, a graduate student in folklore. In his early years, his father disappeared due to "evil things". For this reason, when anomalies began to increase dramatically, Chen Shi and his colleagues from the "Folklore Bureau" began to gradually uncover the deep world.