In the disaster years of the 1960s, Lingfeng was separated from his family by his elder brother and sister-in-law and took away food. He accidentally relied on an old watch left by his father to bind a time-travel system, which allowed him to travel back and forth to 2025. He exchanged old items from the 1960s for wealth in 2025, met antique shop owner Li Yanran and others, and purchased food and materials to bring back to improve the lives of his sisters. He helped the villagers in exchange for food, solved the water shortage problem in the village, fought off harassment by evil people, and provided advanced technical materials to the country. During this period, they experienced family entanglements, business opportunities, and dangerous challenges. In the end, not only did their sisters live a good life, but they also realized their dreams of returning to school and fulfilled their promise to their parents.
