Global changes occur, zombies are rampant, mutated creatures are raging, and human civilization is on the verge of collapse. College student Chen Mu accidentally activated the "Wanjie Commodity System" bound to his ancestral store during an escape. This system allows him to draw products from different planes from the small shop - it may be a panacea from the world of immortality, an energy weapon from the science fiction world, or a spell scroll from the magic world.
At first, Chen Mu only used these commodities in exchange for survival supplies in the apocalypse. He exchanged a pack of instant noodles from a different world for the precious gasoline in the hands of the survivors; he used a bottle of potion that could quickly heal wounds to save the dying superpowers, thereby gaining their allegiance. As the store upgrades, he can not only extract higher-end Bankai products, but the store itself also gains special abilities such as increased defense, expanded space, and even the ability to isolate apocalyptic radiation.
Wanjie's products are not inexhaustible. Each draw requires "transaction points", and transaction points come from satisfying customers' "emotional value" - that is, the satisfaction, surprise, and hope in despair that customers get from the products. At the same time, some powerful beings outside the world have also begun to covet this "convenience store door" that connects the multiverse. Chen Mu must constantly upgrade his shop and improve his own strength in order to find a new way out for human civilization in the apocalypse and between the worlds.