The little girl Sui Sui, rescued from the snow, turns out to be the Shen family's living good-luck charm! She understands the habits of wild plants, can identify medicinal herbs and insect pests, and knows the movements of birds and animals. With Sui Sui's help, her parents dig up sweet potatoes, open a sauce-making workshop, and start a mountain produce business, transforming their humble farming life into a thriving one. Her eldest brother passes the imperial examinations one after another and becomes a court official, her second sister practices medicine and saves lives, earning widespread fame, and her third brother becomes a wealthy business magnate. Together, the family overcomes famine and helps their neighbors.