Three years in the making, this is the dramatic saga of Yellowstone's Druid wolf pack, its turf wars with rival packs and the fate of the wolves' Lamar Valley ecosystem.

As the first wolves reintroduced into Yellowstone, the Druids are the most celebrated wolf pack in North America. Pioneers in the wilderness, they were at the heart of a massive scientific experiment to restore an entire ecosystem that began to break down without its wolves. Emmy Award-winning filmmaker Bob Landis spent more than three years with the these remarkable wolves, creating a spectacularly dramatic and intimate record of their lives, their great battles with rival wolf packs and the changing fortunes of the coyotes and foxes who share their home range in Yellowstone's beautiful Lamar Valley.