To save the critically ill Xiaobao, Li Shoutian was forced to mortgage the backyard of his old house to pay off debts, but unexpectedly discovered that the vegetable garden's sweet potatoes connect the vitality of the three realms. Forces such as Leiting, Tianshu, and Xueya coveted the origin of the sacred fruit, forcefully buying and demolishing. Refusing to take advantage of others' misfortune, Li Shoutian used sweet potatoes to exchange for gold bars and life-saving medicine, insisting on fair trade and using mortal strength to defend the rules of the field. After Xiaobao's successful surgery resulted in pulmonary fibrosis, he traveled far to Dawn City to find equipment. In the end, Xiaobao recovered, and the demon realm and snow country jointly guarded the farmland. The core conflict is family affection saving lives versus resource plunder.