Lu Tian, who suffered severe grievances working hard in the big city, accidentally had his eyes scratched by a piece of ancient jade fragment, awakening the Azure Dragon Purple Gold Pupils. This pair of divine eyes can see through everything underwater, find rare seafood and sunken ships, and can also nurture Azure Dragon spiritual liquid to enlighten living creatures in the sea. He chooses to return to his hometown to go beachcombing, first saving old yellow dog with spiritual liquid, turning it into a divine dog to go out to sea together. While others are still laboriously picking up small seafood on the mudflats, Lu Tian has already harvested precious sea fish and crab kings. Facing other people's doubts and taunts, he relies on his own ability to buy a fishing boat to build his home, slowly unlocking stronger power, guarding the ocean, pursuing deep-sea mysteries, and finally growing from an ordinary beachcomber into a respected ocean guardian.