During the Republic of China, Zhao Tieshan formed a "blood scale contract" with the Chang family of the Five Immortals of the Northeast at the foot of Mopan Mountain. The Zhao family has since become a wealthy family, but it has also been shrouded in the shadow of "blood debt" - each generation must suffer from disability, short life, or loneliness. As time passed to modern times, Zhao Shanhe inherited this special origin and borrowed the power of the Chang family snake fairy to step into a series of strange and terrifying folk mysteries in the rocky land of Jilin. He and Xing Xiao fell in love secretly while exploring unsolved supernatural events, but they didn't know that Xing Xiao was implanted with the "Seven Star Nail" by the cult "Oriental Holy Religion" and was controlled invisibly.
The cult covets the energy of the Mopanshan Mountains, and its conspiracy spreads like poisonous mist. While Zhao Shanhe was deciphering family secrets and the truth of folklore, he entered into a life-and-death struggle with the "Oriental Holy Cult". However, "blood debt" is like maggots in the tarsus, dooming him to a bad fate. In the final battle, Xing Xiao died trying to save Zhao Shanhe, and the two had no choice but to say goodbye forever. Zhao Shanhe broke part of the curse, but also shouldered the responsibility of guarding Mopan Mountain. In a fate that is intertwined with mystery and horror, he continues this weird legend that spans time and space.
