Hidden among the mountains of Northeast China is an ancient village called Zhangjia Village. Its people believe in a mysterious religion: spirit mediumship. Spirit mediums serve as bridges between humans and deities. By borrowing the power of animal spirits, they can ward off evil, avert disaster, and heal the sick.
Zhang Xiaofan, a young hunter from Zhangjia Village, is the fourth child in his family, so the villagers affectionately call him "Little Fourth." Naturally curious, he is fascinated by the village's legends and the mysterious power of spirit mediums.
But Zhangjia Village's peace is shattered by a mysterious outsider. Claiming to be a folklorist, he takes a keen interest in spirit mediumship, and his arrival seems closely connected to the strange events unfolding in the village. By chance, Zhang Xiaofan rescues an injured fox, only to be unexpectedly possessed by it and become a true spirit medium.
From then on, Zhang Xiaofan's life changes beyond recognition. He begins to experience a series of incredible events that set him on the path to becoming a spirit medium's disciple. Under Granny Li's guidance, he learns about the knowledge and rituals of spirit mediumship. To prove himself worthy of serving as a spirit medium, he must pass a series of trials.
As Zhang Xiaofan's reputation gradually spreads, he makes a name for himself in the martial world and comes to be known as "Fourth Master Zhang." He begins taking requests for help from outsiders and dealing with more complex supernatural cases. But as his fame grows, he also faces more powerful adversaries, including evil spirit mediums and hostile forces in the martial world. He must rely on his wits and martial skills to protect himself and the villagers
