Border to border from Mexico to Canada, four friends embarked on the journey of a lifetime. Across solely public land, Ben Masters, Jonny Fitzsimons, Ben Thamer and Thomas Glover traversed desert to mountain across five states and 3,000 miles—with 16 horses in tow. A journey once a reality for western frontiersmen, the men choose to use wild mustangs as their trail horses. The mustangs have been bred perfectly to suit the rocky terrain of the west, but they are threatened by decreasing public lands, highways and tourism. With exquisite cinematography of breathtaking terrain from the Grand Canyon to Yellowstone, Unbranded takes us into this challenging endeavour, exploring the greater plight of the mustangs, and the importance of public lands.