Su Yan, an antiquities restorer, accidentally unlocked a gold-gilded fragment of a scroll. The seven "netherworld coordinates" recorded in the scroll actually concealed supernatural mysteries that had been forgotten in reality. In order to unravel the connection between the fragments and the missing master, he summoned three partners with special skills - Lin Wan, a folk blogger who can understand Yin and Yang, Chen Ye, a science man who is proficient in mechanics and Feng Shui, and Zhao Lie, a retired outdoor leader with extraordinary skills, to form a "tracing team". From the bloody nursery rhymes of ancient houses in deserted villages, to the shadowy curse of sunken ships in the deep sea, to the time and space rifts in the secret realm of the plateau, the four of them follow the guidance of the fragments and go deep into dangerous situations. They must fight against the evil spirits and ancient magic traps, and also beware of the mysterious organization that secretly covets the power of the fragments. Every adventure is a gamble of life and death. While they uncover the truth of the secret realm, they gradually come into contact with the fateful fetters that span thousands of years. And the most terrifying enemy may be hidden in the team...
