58-year-old silkworm king Lu Jianghe hollows out his savings to buy a house and marry a wife for his son, only to be humiliated and driven out of his home by his daughter-in-law Wang Yue. He returns to Baishui Village and, relying on thirty years of silkworm-raising craftsmanship, starts from an abandoned silkworm room, collects sick silkworms, gathers mountain goods, expands the silkworm factory, and successfully counterattacks all the way to win the championship of the National Silkworm Raising Competition, receiving five million in prize money. Because of an investment thunderstorm, his son's family owes five million in debt and comes back to ask for help. Lu Jianghe sticks to his bottom line and refuses to give relief. In the end, his son and wife work to pay off their debts and sincerely repent.