22nd-century business elite Xu Jiaojiao time-travels through a plane crash to the material-scarce year of 1958, becoming the fourth daughter of the Xu family. Facing the impending three-year famine, she accidentally awakens the purchasing group cheat, needing only to help others purchase goods to receive a 1-to-1 material rebate. To survive and establish a foothold, Xu Jiaojiao successfully applies to work at the supply and marketing cooperative, cautiously conducting cross-time purchasing business taking advantage of her position, and secretly hoarding scarce supplies like grain, oil, cloth, and non-staple foods to prepare for the subsequent great famine. She constantly guards against the risks of the era, on one hand relying on her clever mind and extraordinary ability to win the appreciation of leaders, and on the other hand using her purchased and stockpiled goods to give her whole family a good life.