Teen Mia never leaves the magic book that her parents gave her years ago. It is thanks to her that she has visited the enchanted land called Centopia, inhabited by extraordinary creatures, such as unicorns, fairies, elves, and evil witches, more than once. This time, Mia discovers that her bracelet contains a magic stone that holds the secret of an ancient prophecy. If the prophecy comes true, the Centopia may disappear forever, and the girl's friends with it. Mia decides to embark on a dangerous journey to the most remote corner of Centopia, where she will have to face a completely unknown, powerful enemy on a lonely island. Fortunately, as always, faithful companions will stand by her side.