The Frackers are coming ...and Rhaia has arrived from impossibly far away to try to locate and put a stop to a world-splitting event. She has an ally waiting to help her, a Wicker Witch dying of cancer who can't really do a lot except to enrol a couple of existentially-challenged luvvies and a fighting spirit or two. And, of course, they need someone to help them stay in (and on-) line. Holly and Rowan are two local teenage misfits who end up embroiled in Rhaia's hunt for the Thunderstone which is threatening her 'children'. They have their own problems - family strife, school, financial insecurity - and really don't have time to get involved in a struggle that takes them from the Haworth moors back and forth across the Bowland Basin. They get involved anyway - teenagers are like that...