Tang Yangyang accidentally inherited the "Xuanyin Secret Technique" left behind by his grandfather. This ancient book full of taboo knowledge records metaphysical secrets such as Qimen Dunjia and Five Elements Bagua. It also hides the curse that the Tang family has carried for generations.
When his neighbor Aunt Wang's house encountered a "ghost on the bed" incident, Tang Yangyang successfully used the "house-calming talisman" in the book to exorcise evil spirits for the first time, verifying the authenticity of the ancient book and attracting the attention of the mysterious woman Xiaoyu.
Xiaoyu approached Tang Yangyang as an antique dealer, but in fact he showed an unusual understanding of the "Xuanyin Secret Art" and showed unusual abilities in solving the old locust tree spirit incident, and the two formed a partnership.
The two were invited to Yunwu Village to solve the "Hundred Ghosts Crying in the Grave" incident, and found that the entire village was shrouded in ancient resentment, and behind it was a massacre that killed a family seventy years ago and a mysterious bronze ghost face.
As the investigation deepens, Tang Yangyang and Xiaoyu discover that all events seem to point to a larger conspiracy, and Xiaoyu's true identity and purpose become increasingly suspicious.