The market for the 100,000 jin of big grass carp in the fishpond has slumped, and a fishmonger is forcing Lao Chen to sell at a loss by offering an unfairly low price. His daughter, Chen Ran, who works in procurement out of town, resolutely returns home and invests her savings in improving the farming method with broad beans to produce crispy grass carp. Father and daughter overcome farming adjustments, customer blind taste tests, and transportation difficulties. Resisting the temptation of competing through low prices, they uphold their quality standards and join forces with local farmers to establish standardized fish farming, opening up a new path for rural aquaculture entrepreneurship.