An outdoor enthusiast and an endurance athlete trek through the backwoods of Alabama.

A marine biologist and a veteran encounter cold rain, bears and moose as they travel through Canada with no clothes on.

A horse trainer and a wilderness instructor survive in the jungles of the Amazon rainforest.

A biology student and an survival instructor head to Croatia.

An elite endurance athlete and a sensitive stay-at-home dad team up in a rugged Belize jungle where jaguars, venomous snakes, falling trees, and powerful storms threaten their evolving partnership.

After a typhoon scatters debris through a Philippine forest, a stay-at-home mom and stubborn trucker try to find a way to survive there. Combating sickness and no food, they come together and ward off hunger by eating a skunk.

A special ops vet teams up with a single mom to fight torrential rains, flash floods, and sickness in Thailand's Sai Rung River Valley. It's a race against time as the pair puts their skills to the test before the river leaves them stranded from the crew.

A resilient mom from Washington is paired with a quirky spider-lover and dropped into the remote Seminole Forest of Florida. Terrorized by huge gators and 550-pound black bears, they are driven to their physical and emotional breaking points.

A Swedish adventure guide and a Texas military veteran take on windstorms, freezing temperatures and cultural friction in Australia's Outback.

A survivalist and a martial arts expert trek through the harsh lands of Nicaragua.

An adventuress and a wilderness instructor take on storms, frigid nights and deadly snakes in the Honduras rainforest.

A book-smart greenhorn and a rock climber take around Namibian savannah. A former survivalist returns.