Lin Wanqiu travels through to the 1980s in Liuhe Village, becoming a wicked sister-in-law who has just lost her husband and forced her sister-in-law to remarry for a three-hundred-yuan betrothal gift. She publicly returns the betrothal gift and tears up the marriage certificate, establishing four rules: "do not sell people, work together, clear accounts, and do not risk your life," propping up the penniless Zhou family. She leads six younger siblings in grinding vermicelli and running a workshop, guards five mu of responsibility land with proper methods, pays off old debts, and expands the family business; furthermore, following the evidence her husband hid in the old tractor, she ferrets out village accountant Zhao Youfuo, who embezzled collective assets, forged IOUs, and murdered her husband, finally bringing the truth to light. The family steps out of the predicament of not having enough to eat and gains a firm foothold, each forging their own path in life.