Kirsty and Rachel are in for a surprise when their fairy friends whisk them off to the Fairyland Music Festival, only for Jack Frost and his goblins to strut onto the stage! The naughty gang have stolen the Pop Star Fairies' magical clef necklaces, and Jack Frost intends to use them to become the biggest star in the world. Una is the fairy in charge of all concerts. But Jack Frost's goblins have stolen her magical clef, and unless Rachel and Kirsty can get it back, the climax of the Rainspell Island Music Festival will be a total flop!