In 1980, Zhou Haichuan, a young man from a fishing village, loses his father early and struggles to care for his seriously ill mother. His younger sister, Zhou Xiaoman, mistakenly signs a ten-thousand-yuan contract selling herself into servitude to pay for their mother's medicine. At their darkest moment, an old conch shell left behind by their father awakens a mysterious Conch Maiden, who predicts the tides and rare catches for him. With courage and honesty, Zhou Haichuan starts by gathering seafood along the shore and fishing, tears up his sister's contract, and saves his mother's life. Despite repeated oppression from the Zhao family father and son and the unscrupulous businessman Lai Wei, he builds his own fishing fleet. Facing violent storms, the mysterious Ghost-Cry Sea, and conspiracies by foreign forces, he protects the villagers and marine resources. Eventually, he develops marine aquaculture, leads the entire village toward prosperity, and finds love with Wang Li.