Naked survivalists Shane and Kim are tasked with surviving 21 days in the Costa Rican jungle. During their difficult journey, the two endure torrential rainstorms, debilitating illness, a wildfire, and a venomous snake that threatens the life of the show's producer.
Naked survivalists EJ and Kellie are dropped off Tanzania, where they have to survive on the sweltering Serengeti plains for 21 days. Lack of food, water, sleep and clothing aren't the duo's only worries either. A pack of hyenas soon makes their presence known, as do other dangerous African predators.
Bare survivalists Jonathan and Alison are stranded on a Maldivian island for three weeks. Alison's laid back attitude causes tension between her and former Marine Jonathan, but they'll have to learn to work together in order to make it home in one piece.
Survivalists Clint and Laura must survive a 21 day stay on a treacherous Panamanian island. Tormented by sand flies, snakes and crocodiles, the pair's only option is to utilize their combined skills and experience to make it out of the tropical torture chamber alive.
Unclothed survivalists Puma and Julie are shipped off to Sabah, Borneo. The pair's mission is to survive in the harsh jungle for 21 days. Together, the two battle illness, starvation, marauding predators, and their own limitations.
Survivalists Billy and Ky are left naked and alone in the Louisiana bayou. The swamplands hold many dangers, including inclement weather, venomous snakes, and alligators that constantly want to make Billy and Ky into a snack.