After the family property was divided, fisherman Chen Fan received an old wooden boat and accidentally rescued an orphan girl named Duoduo, who had the gift of understanding the voices of sea creatures. The father and daughter settled by the sea and relied on Duoduo's special ability to discover seafood resources in tidal channels. Facing malicious suppression from fellow fishermen, they held firm to their principles in the fishing industry and refused to deplete the ocean's resources. They joined forces with their fellow villagers to restore an abandoned salt field and develop ecological aquaculture. Together, they fought against reckless commercial fishing, protected the marine ecosystem along the coast, and built a stable, happy life by the sea through hard work and a clear conscience.