In the early 1980s, the kind widow Shen Lan defies prejudice and adopts a baby girl, Xiaoyu. Blessed by the lucky baby's magical fortune, Shen Lan shows extraordinary resolve. She decisively splits the household, reclaims wasteland for farming, and establishes an agricultural and fishing cooperative, while Xiaoyu's four older brothers are fiercely protective of their little sister. When a natural disaster strikes, Shen Lan bravely leads the resistance, and in the end, the backward fishing village is gloriously transformed into a model village.