This is an imaginary love story. There is a fairyland-like place in an alien space - Mango Fantasyland. The curse that has been sealed for thousands of years has been mysteriously released. I live here to guard the seal, but I still can't stop it. My subjects are sleeping in the Mango Snow Realm. It is a place created by illusion. No one can enter except me. I don't know how they can sleep in this place. Under the instructions of the Mango Color Crystal, I know that I must go to the human world and become the Mango Thief. At this time, the Mango Fantasy Realm was empty, and the sadness of Mango Castle spread out, surrounding the entire Fantasy Realm. I know it's time for me to go to the human world! ! In the end, what story will happen?