It tells the story of the demon-conquering master Yun Ya and the ancient demon Wu Jin's journey to the west to learn scriptures. Yun Ya originally adhered to the obsession of subduing demons, but in the confrontation with fish demons, pig demons and other monsters, he gradually realized that demons breed from the dirty human heart, and the real way to conquer demons is to transform the human heart. He traveled westward with Wu Jin, who aimed at Mahayana Buddhism, and resolved the obsessions of "demons" such as the Sand Demon and the Bull Demon King along the way. After experiencing the test of love in the Daughter's Kingdom, he finally arrived at Lingshan to obtain the true scripture. After returning to the East, the two built the Duxin Temple to preach Buddhism and save all sentient beings. However, they were framed by Prime Minister Li Linfu and monks from Tianzhu. Fortunately, the Emperor of Heaven came to their senses and cleared their grievances, allowing Mahayana Buddhism to spread throughout the world, creating a prosperous era of peace and prosperity for the country and the people.
