Around the turn of the millennium, Zhou Haisheng encountered danger at sea, being abandoned by his father and brother on a solitary reef, and accidentally rescued the white carp contractual giant kun Xiaobai to survive. Returning home to find his family actually wanting to sell his wife and daughter, he rose up to protect his wife and daughter, relying on the giant kun's fish intelligence, going out to sea to catch fish and start a business, breaking free from his original family's exploitation, purchasing boats and courtyards, establishing a fish cargo business, and finally the wicked received punishment, while he and his wife and daughter lived a stable and prosperous life.