Zainspirowany klasyczną chińską opowieścią Wędrówka na Zachód serial opowiada o przygodach nastolatka, MK, który podchodzi do swojej misji ratowania świata.
The Monkie Kid learns how to duplicate himself and uses these powers to do daily tasks as he has fun, but this is not only fun and games for he most face the consequences of his actions.
Monkie Kid and Sandy visits Mei's home, and while that is happening Lady Iron-fan orders General Iron-Clade to steal an ancient sword which is contained in Mei's home and Mei must confront him and prove herself worthy.
A mysterious man who claims to be the mayor gives the Monkie Kid a magical skeleton key which allows Monkie Kid to open any door and the Demon Bull King orders Red Son to get him the key to open a strange lock.