San Zang and his disciples enter a land consumed by an ominous fog and encounter an innkeeper who tells them of a mysterious threat in the mountains. Once, the inn prospered on the business of traveling merchants and the land was not covered in fog. Then one evening a tremendous wind blew, after which the fog rolled in and never went away. Several merchants who had spent the evening at the inn set out westward to conduct business and were never seen or heard from again. Several days later, the innkeeper was doing chores when one of the businessmen stumbled out of the fog. Covered in a mysterious weblike sunstance and moments away from death, the merchant was only able to mutter something about a spider before he died in the innkeeper's arms. There are seven monstrous faries, both beautiful and savage, who will ensnare San Zang in a dangrous web of deceit. Now, Wu Kong, Bajie, and Wu Jing will have to keep their wits about them to distinguish fact from fiction and reality from illusion; their master's life depends on it.