Plumber Jude Yan is bitten by a mutant sea snake, gains a Mutant Sea Snake Avatar with perspective and evolution abilities. Relying on the Sea Snake Avatar, he fishes and catches seafood in the ocean, supplies goods to Shop Owner Becky, helping her business outperform competitors, provides a good life for Auntie Yan, and meets his girlfriend Maggie Lee during fishing trips, reaping a wonderful life.