There is a "heterogeneous" monk Xuanchen hidden in a dilapidated temple in the west of Chang'an City. It turns out that he traveled through time to the second generation of rich people. He was in the second-level Bodhisattva state but was as timid as a mouse. He used his nephew as his bodyguard every day. Unexpectedly, he was bound by the system and forced him to find a seven-year-old boy named Chen Yi (Tang Monk) to be accepted as his disciple to help him obtain Buddhist scriptures from the West. If the mission fails, the senior brother will hit the head with a Zen stick and chant sutras for 12 hours every day. The cowardly monk is forced to go into business, avoiding danger while looking for disciples, and the hilarious prequel to the sutra begins!