There was a time when man was truly wild. Survival meant silently stalking your prey, climbing high in trees to escape predators, and utilizing every resource within reach to stay alive. That era may be gone but there are still men and women who blaze though the forest, swim the raging rapids, and spend their days in the treetops. In an epic journey through four distinct terrains; the jungle, coast, mountains and canyons, these men and women must live completely off the land, while tackling the most punishing obstacles on earth. They will face conditions that early inhabitants tackled hundreds of years ago, relying on nothing more than basic tools, mental toughness and brute strength.