Hailstorms and torrential rains destroy all the grain seeds. Young Shen He is left with only seven seeds, and she has just forty days to repay her debt and save her mother's inherited farmland. Together with her father, Gu Yan, an apprentice bookkeeper, and their neighbors, she improves the soil and explores additional farming and breeding ventures. Combining practical skills with arithmetic, they overcome natural disasters, pay off their debts, grow grain in the cracks of stone, and establish a shared seed bank. Seven seeds become the hope of an entire village, proving that even the hardest beginnings can lead to a bountiful harvest.