A report on the reintroduction of wolves to Yellowstone Park and its environs by the U.S. Park Service. Though initially met with skepticisms, the wolves have had unforeseen and positive impacts on everything from tourism to the park's ecological system. Includes interviews with: Doug Smith, Yellowstone wolf research program; Glen Mai, retired FBI agent; Kathy Lombard retired cop; Rick McIntyre park service employee; Randy Newberg, Montana hunter; Erik Kalsta, Montana rancher.