One day, Shimajiro meets a boy named Mira from "Miracle Island" who possesses mysterious powers. Mira had a seven-colored carnation that "grants wishes when given to someone important," but it was stolen by the Great Wizard, who is trying to hoard all the seven-colored carnations on the island for himself. Will Shimajiro and his friends be able to help Mira retrieve the seven-colored carnation from the Great Wizard...?