Fisherman Sun Qian saves the orphan Dubao from the river, and Dubao can sense water and aquatic spirits. When Sun Qian's fishing is maliciously blocked by Boss He, who cuts off his sales channels, he relies on Dubao's guidance to find an underground river to transport fish and escape his predicament. He cleverly takes over a waste puddle polluted by toxic water, uses the underground live spring to develop the fishing industry, and repeatedly resolves the malicious calculations of his opponents. Later, overcoming heavy difficulties such as a lack of ice and equipment power outages, he starts a canned food factory, leads the whole village to work hard and get rich, formally adopts Dubao, and reaps family happiness and a wonderful life with the villagers.