Poor fisherman Wade Chen falls into the deep sea and gains the power of a Blood Pact with a dragon girl, allowing him to form pacts with sharks, Giant Octopus, Sperm Whale and all kinds of sea beasts, roaming freely across the ocean floor. He retrieves top-grade Melo Pearl and century-old Ambergris from the deep sea, becoming rich overnight through auctions. Later, he dives 240 meters without equipment to make contributions to the country, salvaging national treasures including Song Dynasty plum vases. With his extraordinary ability, he monopolizes the high-end seafood market, owns a sea view mansion, and teams up with businesswoman Clara Shen to build a seafood empire. From a run-down wooden hut to the peak of life, Wade Chen finally proposes to Jillian Xu, who has stayed by his side through thick and thin, completing the legend of a grassroots rise to success.
