There is nothing more dangerous than magic... Eleven-year-old Erskin is used to danger; she lives in the shadow of Mountainfell, a place of wild creatures and dangerous magic. When the most powerful and deadly creature of all - the fearsome cloud dragon - snatches Erskin's sister away, Erskin must face her greatest fear and journey onto the mountain to bring her back.

A terrible power is stirring, and it is up to Erskin to save both her family and her home.