Korea's national friend, the bubbly Choi Jadu! The main character of the classics "Jadurella" and "Jadu and Gretel" Jadu is about to take over Fairy Tale World. Choi Jadu went to the amusement park with her parents on Children's Day. She goes on the rides with her siblings until she has to go to the bathroom. She enters an old building at which she finds an old book. But the moment she opens the book she's sucked into it. This Children's Day, a magical adventure occurs in the land of dreams.