Twelve-year-old Janie Rutland somewhat grudgingly befriends Reggie Rankinthe weird new kid at schooland finally has someone to investigate her curious sightings in the abandoned house next door. When they find there's an impossible world in danger of total destruction, they face a choice. Do they have what it takes to save it? An eccentric fellowship gathers as they embark on a perilous quest in a race against time and their own fears. Traveling in what can only be described as a pirate hover ship, they're threatened by monsters and storms, shipwrecks and death. Can they find the answers they need to save Sianand maybe all worlds?