To raise money for his father's surgery, Lu Chuan sets sail aboard a fishing boat owned by his former brother-in-arms, Wei Biao. With his grandfather's Fishing Notes and the mysterious powers of a bronze token, he catches fish worth a fortune, only to have Wei Biao pocket the million-yuan lifesaving money. With no other way out, Lu Chuan mortgages his property, buys a rundown boat, and strikes out on his own, but Wei Biao relentlessly sabotages and blacklists him. With Master Hai's help, he ventures into the deadly canyon and meets Lin Qingyan, the female owner of Longyan Pavilion. The two join forces to break the monopoly and completely crush the Wei family in a fierce battle on the high seas. After establishing himself, Lu Chuan decides to venture into a mysterious deep-sea realm to uncover the truth behind his grandfather's disappearance and the secrets of the bronze token. Meanwhile, Wei Biao flees with the second half of the Fishing Notes, setting the stage for their final showdown.