Rachel and Kirsty have been invited to meet the seven nieces of King Oberon and Queen Titania - the Princess Fairies! But when Kirsty and Rachel arrive in Fairyland things soon go wrong, Jack Frost and his wicked goblins steal the princesses' tiaras! The tiaras contain special fairy magic that look after happiness and fun in both the human and fairy worlds. They need to get them back so everyone can be happy once again!