Mischievous King Monkey is summoned to Heaven, where he steals the heavenly peaches, and eats them to gain immortality. He fights two of the Emperor's officials, and all three of them are expelled to Earth. Monkey gets imprisoned under a mountain of rocks, while the other two are transformed into a pig monster (Pigsy) and a water monster (Sandy). Buddha says that a holy man must be sent to fetch holy scriptures from India, to save the world.

Buddha sends a messenger, the Boddhisattva Kuan-yin the Compassionate, to find a holy man to make the journey from China to India to fetch the large vehicle scriptures. She chooses the boy priest Hsüan Tsang, and bestows upon him the name Tripitaka. Joined by the irrepressible Monkey - with his magic wishing staff and magic powers - and a talking horse, this could be a journey to remember...