In a fishing village during a famine, Chen Haisheng loses a leg while saving someone, only to be abandoned by his adoptive father. The hundred-year-old magical turtle, Old Hai, whom he once helped, comes to repay his kindness and grants him a magical pearl that allows him to preserve live fish and gives him extraordinary strength and sharp hearing. Protecting his wife Xiugu and daughter A Luo, he relies on spirit beasts and his special abilities to brave dangerous waters, fight ruthless fishing tyrants, teach the villagers how to make a living, stand against unscrupulous merchants, and defend their fishing grounds, carving out a peaceful life amid the chaos.