When Mia returns to Grandfather's summer home, the stone in her magic bracelet suddenly lights up. Mia is called back to the magical unicorn world of Centopia where she meets Iko, an elf who desperately needs her help. Toxor, a monstrous, toad-like villain is taking over the island, transforming its inhabitants into an army of will-less followers. To defeat Toxor, Mia and her new friends must follow in the footsteps of the mythical heroine of Centopia and unite three ancient stones. As the great battle for the magical Island turns into a rescue mission, Mia learns what it means to be a true hero and must ultimately make a decision that will change her life forever.
