In the 1980s, seaside youth Luo Zhiyuan is occupied of ancestral property by cold-hearted older brother and sister-in-law, saves a thousand-year hawksbill turtle in desperation, awakens the Sea Spirit System, binds tidal flat ducks, seagulls, killer whales, giant octopuses and other marine spirit pets, relies on rare seafood to counterattack and get rich, thwarts older brother and sister-in-law's frame-up and ruffians' robbery, resolves storm surge to save people, gets acquainted with good match Lin Qian, makes friends with business VIPs, and finally clears the deep-sea industry, becoming the leader of coastal industry from a down-and-out poor boy.