The Riddle of Dorothy's Castle.Seravy and Dorothy argue once more because Seravy taunted Dorothy about her "ugly pink hair". Dorothy flees Mount Mochimochi while Seravy, along with Riiya, are accidentally shrunk by magic. Seravy's powers have shrunk as well so he cannot return himself back to normal. Chacha, Riiya and Shiine decide that Dorothy is the only one who can help but since they are fighting, how can they convince Dorothy to help Seravy? They travel to Dorothy's castle and find their way inside for the potion to bring them both back to their normal size...