The thrilling conclusion to the epic middle grade fantasytrilogy from Katherine Applegate, the New York Times bestselling andNewbery Award-winning author of The One and Only Ivan (now a majormotion picture!), The One and Only Bob, Wishtree, and Crenshaw!

In the beginning, Byxs original quest was to discover ifthere were more of her kind, or if she was destined to become an endlingthelast dairne alive. She did indeed find more dairnes, and along the way she alsocreated allies among other creatures in her world, including humans, felivets,raptidons, and wobbyks.

But Byx and her new friends soon learned that it wasnt justdairnes in jeopardy of extinction, but that everyone was at risk. With theworld in unprecedented danger, Byx must rally creatures of all kinds to lead arevolution.