Accidentally time-traveling to a famine year, modern youth Gu Zhouyuan becomes the notorious third Gu family son in the village. Awakening with a supplies exchange system, he resolves to turn over a new leaf and prop up his dilapidated home with his own hands. He enters the mountains to gather herbs and hunt wild boars to solve food and clothing needs, figures out a method to detoxify cassava to expand grain sources, and trades grasshoppers for grain as well as digs irrigation canals, leading fellow villagers to jointly resist the dual disasters of drought and locusts. From a prodigal son despised by the whole village to the family's pillar of support and the village's backbone, Gu Zhouyuan walks a warm path of guarding home and protecting kin, and helping neighbors tide over hardships in the disaster year with responsibility and goodwill.