Lin Haichuan has been an expert in navigation and fishing since childhood, having learned everything from his father. After his father passed away, he and his two older sisters spent eight years helping their eldest brother run the Sea Tide, taking on all the hard work while their brother and sister-in-law kept every penny of the earnings. Depressed and frustrated, Haichuan turns to a fishing game to pass the time. When his eldest brother publicly challenges him to prove that he can find fish through the game, Haichuan accepts the bet: if he succeeds, the entire next catch belongs to him. Unexpectedly, the game connects to the real ocean, and a single cannon shot draws in 3,000 jin of wild large yellow croaker and a golden fish king. When his brother and sister-in-law go back on their word and try to seize the fish, Shen Qinglan, the owner of a seafood restaurant, offers a high price to buy the entire catch. With his first earnings, Lin Haichuan repairs the broken boat left behind by his father and takes his two older sisters away from their oppressive brother and sister-in-law. As the game unlocks extraordinary fishing skills, he rises from a rundown boat to building his own fleet, setting sail toward the ultimate golden fish tide.