Fishery King Lu Chen was plotted against by his uncle's family, leaving him with only two mu of dead mudflat. However, he accidentally saved stranded dragon sisters undergoing tribulation, receiving a golden scale that transformed into a 'golden shovel.' From then on, his mudflat directly connected to the Dragon Palace, and digging for treasures was like using cheats—huge blue crabs, gold coins, and antiques were readily available. With the dragon girls secretly helping him, he became super rich and bought a boat, wildly slapping the faces of toxic relatives. On a typhoon day, the greedy uncle's family's lives were hanging by a thread; Lu Chen risked his life to save them, exposing the dragon girls' identities. The evil dragon Ao Kun had a thousand-year layout, trapping the twin dragons with a dragon-binding net. Lu Chen awakened the dragon vein and fought a decisive battle in the deep sea with the golden scale, ultimately winning the Fishery King crown and turning the Dragon Palace into his own backyard!