Spirits in the Stars - Erin Hunter - Bog

On the unforgiving Arctic Ice . . . United once again, Toklo, Lusa, Kallik, and Ujurak continue their journey across the treacherous ice, certain that the answers they're searching for will soon be within their reach. But their challenges are not over, and when the group finally reaches land, they meet a tribe of bears plagued by a strange illness. As they near the end of their journey together, the four bears are faced with a critical decision . . . and for one bear, the path ends here.