The kind fisherman Chow Ching rescues an orphaned girl named Xixi from the river. Xixi has the special ability to sense water currents and aquatic creatures. When Chow Ching's fishing catches are maliciously blocked from sale by a local wealthy merchant, he follows Xixi's guidance to find an underground river, opens up new transportation routes, and successfully gets out of trouble. He contracts abandoned river beaches, develops fishery relying on the underground river channels, and repeatedly defuses malicious schemes from his rivals. Later, he overcomes many difficulties including ice shortages and equipment power outages, builds a canning factory, leads the whole village to get rich through hard work, officially adopts Xixi, and gains a happy family life.
