The magic is out of control! On a journey to Gold Ridge, the four young mages-in-training: Daja, Sandry, Tris and Briar find their special magics overlapping, sometimes in frightening and destructive ways. One burst of this combined magic leads Daja to create an astonishing vine made of living metal. Her creation is worth a small fortune. But can Daja bargain with the Traders who cast her out without losing her soul? Once again Tamora Pierce, America's most popular writer of young adult fantasy, leads the Full Cast Family in a thrilling exploration of her intricately woven "Circle of magic".