Plumber Yan Chujiu was bitten by a mutant sea snake, obtaining a mutant sea snake avatar and possessing clairvoyance and evolutionary abilities. Relying on the mutant sea snake avatar, he catches fish and seafood in the deep sea, supplies boss Bi Jin to help her business surpass her competitors, enables his aunt to live a good life, and meets his girlfriend Li Meiqi during the fishing process, reaping a wonderful life.