Li Jin, a fisherman drowning in debt and bankruptcy, is humiliated by his girlfriend and a wealthy young man working together, and nearly loses his life. By a twist of fate, he binds himself to a Deep-Sea Treasure Detection System that lets him see through schools of fish and hidden reefs at a glance. With a boatload of premium seafood, he makes a comeback, builds a fleet, and establishes a company. He also discovers an ancient shipwreck in the deep sea and helps the nation protect its cultural relics. Those who once looked down on him are eventually brought to justice, while he transforms from a bankrupt fisherman into an honorary citizen.