Two more survivalists try to survive 21 days without food, clean water, and their clothes in the Himalayan foothills of northern India. In the face of severe dehydration, one survivalists' debilitating illness threatens to derail both their chances of success.

Two survivalists try to survive for 21 days in the hot and swampy jungles of southern Nicaragua while armed with only a machete...and a roll of duct tape. But an early tap out leaves one of them alone in an attempt to survive for 16 days.