From Green iguanas and Nile monitors, to rock pythons and the biggest nasty of them all -- the 12-foot Burmese python -- alien invaders have infested the Florida Everglades. And now an elite squad of hunters is fighting back. Patrolling one of the most beautiful and delicate environments on the planet, the Python Hunters are determined to get these invasive species under control. It's a high-stakes, adrenaline pumping conservation mission, and if they fail, one of the most important eco-systems in America may never recover.