Wu Feng finds himself transmigrated into the mythical Journey to the West era, but with a bizarre twist: he is bound to a mysterious grocery shop on Mount Huaguo. Granted invincibility within his store's walls yet unable to step outside, Wu Feng faces an agonizing solitude until his first customer arrives. That customer happens to be none other than Sun Wukong, the legendary Monkey King.

A unique system governs this shop, requiring customers to trade cultivation techniques, spiritual treasures, or fate itself for 'Exchange Points' to purchase items. When Wukong attempts to browse, he discovers he cannot even touch the merchandise without paying. Intrigued by a book titled 'Wukong Biography' that seems destined for him, the Monkey King trades his most prized secrets, including the Seventy-Two Transformations and Somersault Cloud, just to read it.

As Wu Feng begins to accumulate powerful arts and treasures from the greatest figures of the Primordial world, his humble shop evolves into a nexus of power. What starts as a simple retail job quickly escalates as gods, demons, and immortals flock to trade their very foundations for items only this shop can provide, propelling the reluctant shopkeeper toward becoming the supreme authority of the myriad worlds.