An aspiring wilderness photographer puts his job, savings, relationships and personal safety on the line in his quest to capture the ultimate photo to show the greatest land migration of wildlife, learning his own lessons of life, purpose and identity along way. The Porcupine Caribou Herd is the longest land mammal migration on earth. They migrate each year through Alaska and Yukon to get to their incredibly sensitive calving grounds which are threatened by oil and gas development. Peter Mather is on a mission to show the world why this place is worth protecting, and he's willing go to extraordinary lengths to do so.