Poor fisherman Chen Wang rescues Cheng Cheng, an orphan girl who can understand the speech of fish. Cheng Cheng brings fortune, helping the Chen family avoid dangers and find fish, gradually escaping poverty. Landlord Wang Dizhu makes trouble repeatedly, blocking roads and cutting off water, designing traps. Chen Wang discovers an underground river, revitalizes an abandoned fishpond, relies on his wife Li Shulan's spicy air-dried fish craftsmanship to open a workshop, and fights against competitors' malicious competition. Business expands from the village to the capital, and Chen Wang also formally adopts Cheng Cheng, leading all the villagers to work hard and get rich together.