Modern supermarket stock clerk Gao Xingyan accidentally travels back to the resource-scarce 1960s, bringing along a magical spatial supermarket that automatically restocks itself. In an era when even sweet potatoes are considered a luxury, he uses its endless supplies to make sure his entire family has enough to eat. Facing snowstorms that block off the mountains, his frail body, and his kind but impoverished family, Gao Xingyan carefully conceals the supermarket's secret while finding ways to improve their lives. From sweet potatoes to fresh fish, he uses modern ingenuity and his seemingly cheat-powered supermarket to lead his family out of the shadow of hunger.