For well over a thousand years, the Blackfeet people of Montana have made their home where the Great Plains meet the Rocky Mountains in Glacier National Park. For them, the bison (or American buffalo, as they call it) has been central to their survival, their culture, and their way of life. We join them as they seek to expand their once-threatened tribal herds of bison. We venture inside the park to find why the Blackfeet viewed it as sacred ground.