In this survival scenario, hosts Cody and Dave find themselves on a deserted island off the coast of Nova Scotia — in the dead of winter with plummeting temperatures. Despite the freezing temperatures — and his partner's objections — Cody doesn't give in on his indigenous survival strategy, where he lives his life barefoot. Here, he's only wearing shorts and wool socks. The only items they have are those they're able to salvage from the life raft they used to reach the island: an emergency Mylar blanket, a plastic tarp, two knives and a single rescue flare. They must use these items and their arsenal of skills to find shelter, build a fire and find food and water, all in sub-zero conditions.

Next, our survival experts take on a mountaineer's worst nightmare. They are left stranded on top of a mountain in New Zealand with limited supplies that would be carried by a climber: rope, crampons, an ice axe and other climbing gear. Working together, they battle 8,000-foot glacial peaks, deadly crevasses and deep rocky canyons as they trek down the mountain on a course set by Canterbury, an experienced climber. To find food, Lundin uses his knowledge of local cultures to tap the dietary wisdom of New Zealand's indigenous Maori.

Each year, an average of 20 people drown while cave diving. For this survival scenario, survival experts Cody and Dave are lost divers who are fortunate to find air, but they are deep inside a maze of caves in Belize. Equipped with only their dive gear — mask, fins, wetsuit, buoyancy compensator and flashlights — they must find their way out and to safety. The survival rules that work above ground, like following a river downstream, don't apply in the labyrinth of underground caves. Instead, they must make their way upstream in a trek that puts Cody's barefoot philosophy to the ultimate test. Once they emerge, the situation goes from bad to worse — they find themselves surrounded by dense jungle, a web of vines and thorn ravaged terrain... and snakes.

Cody and Dave head into Peru's infamous "Valley of the Volcanoes" to take on the ultimate lost-in-the-desert survival scenario — a broken down car miles from civilization, in the middle of an almost barren lava-scorched landscape. Here, Dave and Cody take on two roles to show how to survive this desolate location: Dave stays with the vehicle and signals for rescue while Cody heads out in search of water. But first, Dave and Cody strip the car for everything it's worth, salvaging the battery, headlights, electrical wiring, tires and seat cushions. They fight volcanic rock, heat exhaustion, altitude sickness,dehydration, rodents and a debilitating illness that literally brings Cody to his knees.

Dave and Cody take on a lost hiker scenario in the sweltering jungles of Laos

Survival experts Cody and Dave head to the heart of the Louisiana bayou to take on a potentially deadly scenario: lost in a 1,000 square mile labyrinth of water channels and bogs, home to 1.5 million alligators and six species of poisonous snakes.

Dave and Cody must trek through tough Arizona terrain to find each other before making their way back to civilization.

For two boat-wrecked hunters, surviving in the Pacific Northwest rainforest takes keen navigation skills and the know-how to avoid hypothermia and signal for rescue. Dave and Cody take on this nightmare scenario and show what it takes to survive.

Cody and Dave find survival resources in the trash in a hurricane's aftermath.

Code and Dave wade through piranha-infested water in Brazil's Pantanal.

Joe and Matt attempt to survive in the harsh terrain of southern Utah without knives or modern supplies.

Joe and Matt travel through the Allegheny Mountains of Pennsylvania, contending with freezing rain, steep ravines and bears.

Matt and Joe start at the site of a plane crash on an uninhabited tropical island, and face long-term survival.

While marooned on a barren island, Matt and Joe risk a swim in shark-infested waters and fight for life-sustaining basics.

While stranded in a black water swamp in southern Georgia, Joe and Matt find themselves in alligator territory.

While on a tropical volcano, Matt and Joe must navigate toward the coast through rainforest, steep-walled gorges and waterfalls.

Joe and Matt cross a volcanic island covered with jungle and water-filled canyons, where setbacks fuel a rift.

Off the beaten path and waterlogged in the rainforest of Costa Rica, Matt and Joe battle torrential rains, deadly insects, and raging rapids. After missing a shot at rescue, they combine survival ingenuity with indigenous skills to get out alive.

Matt and Joe are marooned on a rocky coast in the Pacific Northwest. They must decide whether to hunker down or travel deeper into one of the darkest, wettest forest in the United States.

In the snowiest part of Wyoming, Matt and Joe demonstrate how to repurpose a broken down snowmobile, make shelter from snow, and survive sub-freezing temperatures in whiteout conditions that cause them to miss a chance at rescue

Conclusion. The guys find a use for a broken snowmobile and make a shelter in the snow as they try not to freeze before they are rescued in Wyoming.

Joe endures the rocky terrain, dense forest and animal threats in the Himalayas, while Matt searches for spiritual enlightenment.

Stranded in the vast scrubland of Namibia, Joe and Matt are in a race to get out alive from one of the driest countries on earth. They run into trouble with a troop of baboons, proving that Mother Nature isn’t the only force in the wilderness.

In the Chilean Andes, Grady and Bill start their survival mission high up on a snowy dormant volcano. They must get off the volcano, find shelter in caves, and trek down into the rainforest. Along the way, they search for food, and attempt to build a fire.

Continuing in the Chilean Andes, Grady and Bill must survive a cold night in the rainforest. On their journey out they hunt feral pigs, build a shelter, and attempt to build a fire again.