Eleven-year-old Darwen Arkwright has spent his whole life in a tiny town in England. So when he is forced to move to Atlanta, Georgia, to live with his aunt, he knows things will be different - but what he finds there is beyond even his wildest imaginings!

Darwen discovers an enchanting world through the old mirror hanging in his closet - a world that holds as many dangers as it does wonders. Scrobblers on motorbikes with nets big enough to fit a human boy. Gnashers with no eyes, but monstrous mouths full of teeth. Flittercrakes with bat-like bodies and the faces of men. Along with his new friends Rich and Alexandra, Darwen becomes entangled in an adventure and a mystery that involves the safety of his entire school. They soon realize that the creatures are after something in our world - something that only human children possess.