Princess Minna is very good at taming unicorns, kissing frogs and fighting dragons. She always saves the day and is helped by lots of her friends. And now Princess Sky-Blue is coming to visit! They’re going to have such fun! But when the train arrives, Sky-Blue’s eleven sisters have been turned into nightingales by a wicked witch! Princess Minna is going to need all her skills and all her bravery to put this one right.