Courier boy Song Fubao received a sky-high order on a rainy night and delivered it to the abandoned Qingyun Temple. After arriving, he witnessed a dying old Taoist being stabbed through the chest with a broken sword, but was told that he was the "seventy-third generation descendant of the Longmen Sect" and was forced to stuff a copy of the "Huang Ting Jing". The old man warned on his deathbed "Don't open the seal" and then died suddenly. Song Fubao fled in a hurry. On the way, the scriptures changed suddenly, and a green light suddenly appeared. His old injuries from cycling all year round healed instantly, and a strange heat flow occurred in his body.
Immediately, an anonymous phone call threatened him to hand over the scriptures, otherwise he would be killed. Song Fubao gritted his teeth and drove to Wudang Mountain, but two black figures pursuing him were reflected in the rearview mirror. He has not yet realized that this ancient book that fell from the sky is not only related to the secret inheritance of Confucianism, Buddhism and Taoism, but also involves him in a chess game that spans thousands of years. He originally wanted to be a happy delivery person, but now he is forced to become a "cross-border messenger" traveling between the mortal world and the immortal world. The first stop is the crisis-ridden Wudang Mountain.
