In his mountain kingdom, the immature King of Youth dictates that everything old is useless. When the pilgrims approach, he decides to kidnap Tripitaka to gain the attention of Heaven and Earth, in an attempt to stop living in the shadow of his father, the King of Ox. When Monkey's powers prove no match for the King's fiery temper, and Pigsy and Sandy are otherwise engaged, who will save Tripitaka?

When Monkey kills a girl and her elderly parents, Tripitaka is left with no choice but to punish him and send him back home to his mountain of fruit and flowers. No one believes Monkey's story that the people he killed were red, blue and yellow demons disguised as humans. When the pilgrims later discover that Monkey was telling the truth, Tripitaka finds himself in grave danger, and wishes he'd never denied the demons' existence.