From the dense woodlands of Montana's Flathead National Forest, to the isolated heart of Idaho's Hells Canyon, to the frozen wastelands of Alaska's high tundra, the adventurers profiled in this docu-reality series live their lives on the edge - sometimes literally - transporting essential supplies to an ever-changing cast of fellow off-gridders. Whether by packhorse, dog sled, powerboat, snowmobile or bush plane, the delivery method may differ, but the pioneers share a belief that no job is too tough. Jet boat operator Brice Barnes, packhorse rider Andy Breland, pilot Rob Kinkade, snowmobiler Roger Phillips, and dog musher Jeff Hemann are featured.