After farmer Sun Shouyi injures his back, he entrusts his twelve mu of contracted farmland to his youngest son, Sun Zhiqiang, to cultivate temporarily. But Sun Zhiqiang treats the land as his private property, promises his fiancée's family that he will build greenhouses for their marriage, pressures his father to transfer ownership, steals the land certificate, and even resorts to violence. Heartbroken, Sun Shouyi transfers the ten-year operating rights to the cooperative, keeping only 1.2 mu of grain-producing land for himself. Sun Zhiqiang's wedding plans fall apart, leaving him burdened with debt. His repeated attempts to cause trouble come to nothing. With no longer any family safety net to rely on, he starts working for the cooperative to repay his debts and finally comes to his senses. Father and son establish clear boundaries and rebuild their lives through hard work.