After a kidnapping, Elspeth Gordie and the Misfits are forced to join the rebellion against the oppressive Council, using their extraordinary mind powers. But Elspeth must also seek out clues left by the long-dead seer, Kasanda, vital to her quest to destroy the Beforetime weaponmachines. One clue is lost in the past, forcing Elspeth to travel the Dreamtrails, stalked by a terrifying winged beast, with the cat, Maruman, as her guide and guardian. Only there can she learn more of the Beforetimer Misfits and their enemy, Govamen. Gradually Elspeth realises that her quest is intimately linked to the Misfits' refuge Obernewtyn - its past and its future...