Living in a family of psychics inexplicably, Mu You was speechless. As an ancient psychic beast, 9/10 of his magic power disappeared, and he turned into a 5-year-old baby. The problem was that he didn't know how he got there. Not contracted but able to survive in the human world. What happened to me. In order to return to the underworld again, Mu You embarked on a journey to find a way.