Divorced fisherman Zhao Haisheng returns to his hometown with his children, only to be driven away by his father, and relies on the special ability of an ancestral amulet to catch seafood and survive. Unfazed by adversity, he works steadily, forms a fishing team, runs a seafood business, and treats those around him kindly. After discovering an ancient underwater shipwreck, he proactively reports it to the state, protects cultural relics, gains honors, leads the villagers to common prosperity, stays together with the kind and resilient Zhou Yuee, and successfully protects his family and national righteousness.