Lin Yue'er, a fisherman's daughter, signs a life-and-death contract to raise the enormous sum needed for her younger sister's kidney transplant. She agrees to care for Gu Shaoting, the heir to a shipping empire, who has been left with broken legs after a maritime accident and has become violent and short-tempered. Born with extraordinary strength, Yue'er uses fishing nets to restrain the rampaging young master, flips a redwood table with her bare hands, and takes on a hundred-jin tuna single-handedly. Using her survival skills and wisdom from the sea, she overcomes the Gu family's internal power struggles and the schemes of business rivals. She develops seafood blind boxes to revive the harbor, travels to Southeast Asia to find medicine that heals Gu's leg injury, and builds her own massive fleet to break the monopoly of foreign shipping companies. She takes on her ruthless second uncle, romantic rivals, and overseas financial tycoons. The once-decadent young master entrusts her with his entire fortune, and together they establish a national ocean-shipping conglomerate. The fisherman's daughter rises to the pinnacle of the industry, finding both professional success and a love in which they wholeheartedly choose each other.