When Archibald and Jockabeb head to a secluded summer camp perched high in the mountains, they think they're in for a few weeks of camping and hiking. When they arrive, however, they find that they're the only two campers at Camp Bear Claw. They also discover that the area is plagued by an evil devil cat-or so the legend goes. As the boys investigate, they soon learn that the legend holds much more in store for them than they could ever imagine. A meeting with the extraordinary Tommy Two Feathers leads to a final showdown with the supernatural creature and tests the protective power of the blue feather for a second time.