13,000 years ago in the Great Lakes Region, twelve-year-old Twig, a Spirit Dreamer who can see into the future, teams up with best friend Greyhawk and the unpopular shaman Screech Owl to warn villagers of an impending natural disaster that could have devastating environmental effects. Includes review questions, recommended reading, and information on the prehistory of the Great Lakes Region, paleoclimatology, and Clovis culture.

"A Tom Doherty Associates book."