the story tells the story of jiang yao, a protagonist, an ordinary university graduate, who was tracing the disappearance of his friend, accidentally learned that he had died ten years ago because he was also "death seal" by the underworld for "changing his destiny without changing his destiny", and was chased by the king of hell. in order to find out the truth about the disappearance of his friend and to get rid of the pursuit of the underworld, jiang yao, who was involuntarily, began to get involved in the dispute between humans and monsters step by step. the ghosts and monsters who originally existed in the ancient book "shan hai jing" also appeared in modern society. during the adventures of traveling through the dark world again and again, a conspiracy that spans thousands of years gradually surfaced... ddd