Seekers #3: Smoke Mountain - Erin Hunter - Bog

The Last Great Wilderness . . .United at last, polar bears Kallik and Taqqiq, black bear Lusa, grizzly bear Toklo, and Ujurak, the mysterious shape-shifting bear, learn of a place they think must be the destination of their quest: the Last Great Wilderness. But getting there means crossing the burning Smoke Mountains, which hold obstacles more treacherous than anything they've faced so far. Signs and omens point in different directions, but each bear must follow his or her own star, and while one is pushed to the brink of death, another decides to leave the group forever. . . .