Chen Yu, a young man from a fishing village, suffers a series of misfortunes. His father and elder brother tragically perish at sea, leaving him and his sister-in-law misunderstood and ostracized by some members of their clan. By a twist of fate, Chen Yu inherits the legacy of a divine dragon and gains extraordinary underwater abilities. He ventures fearlessly into Black Tiger Reef to catch rare seafood and meets Qin Yue, a powerful female CEO. Using his skills, Chen Yu builds a fishing fleet, opens a seafood processing plant, and develops an ecological aquaculture base. Competing against unscrupulous merchants, he leads the villagers toward shared prosperity. From a destitute young man with nothing, he gradually grows into a Fishing King who benefits the entire community, achieving success and finding sincere love.