The flood doomsday descends, water and electricity in the city are cut off, and survival supplies become the scarcest resource. Jiang Yue binds the Myriad Worlds Convenience Store system, opening a shop with her sick younger brother to survive: water, food, medicine, and even refrigeration and water purification services can be exchanged as long as there are points. Facing the Black Rock Guild snatching supplies and blocking water sources, she relies on the management system to upgrade step by step, turning the shabby small shop into a mobile supermarket and doomsday shelter. While others desperately flee, she opens a shop to save people and accumulate resources, vowing to forge a path of life for everyone before the flood engulfs the entire city.