Rachel and Kirsty are going to a giant sleepover in the city--and they can't wait! But everything is going all wrong. The girls have a feeling that Jack Frost and his goblins are behind this. And they're right! The goblins have stolen Selena the Sleepover Fairy's three magical objects. Can Rachel and Kirsty help her track them down, so that sleepovers will be full of fun, games, and giggles again?