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

How lost hunters can survive in the harsh conditions of Tierra Del Fuego, how to survive and extreme injury.

Cody and Dave take on the scenario of two ranchers, stranded on the Northern Great Plains in Montana during the dead of winter. Their only survival supplies are the charred remains of a burned-down shack: an axe head, a bison hide, a glass jar, a metal tin and a steel striker

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

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.

Our intrepid duo take on the survival scenario of two castaways adrift at sea and show how to survive being stranded on a deserted jungle island in the South Pacific. This time, even Dave goes barefoot.

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.

Cody and Dave take on a survival scenario in South Africa's backcountry where dehydration kills in hours and hungry super-predators kill even faster. Armed with nothing but a machete, they show how to escape the bush without getting eaten alive

Isolated beneath the mountains of Romania, lost in a labyrinth of underground caves, Cody and Joe fight to escape the pitch black darkness with dying headlamps. Their teamwork is further strained by their opposing survival philosophies.

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.

The hosts portray two lost travelers who run out of gas on an abandoned logging road in Northern Maine. To survive, they loot a broken-down truck for supplies and find a can of dog food.

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 head into the Everglades to take on the role of airboaters stuck in a sawgrass prairie marsh under the blazing Florida sun. They must seek shelter in a nearby swamp where water moccasin, python and alligators lay in wait.

Dave and Cody take on the role of biologists lost in the wet cloud forests of Panama 7,000 feet above sea level with only a poncho, specimen jar and a broken lighter to aid in their quest for civilization.

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

Cody and Dave are dropped in the Highland jungle of Thailand that has few tools for survival but lots of things that like to bite

From the barren salt flats to the vast desert woodland, Dave and Cody battle the elements in the sun scorched desert of Baja, Mexico. With few supplies, they each demonstrate how to make use of an unlikely resource - urine

On the season finale, Cody and Joe take on the mountains of Northern California. The damp and treacherous woodland environment proves to be the ultimate test for Cody and Joe, with drastic temperature changes and a lack of dry materials for fire-building.

In Botswana's Okavango Delta, Cody and Dave -- equipped only with a dying GPS and waterlogged binoculars -- seek to escape the dangerously territorial and deadly hippos that rule the marshland.

In Kentucky, Dave and Cody take on a scenario of two kayakers who are dumped into the cold river just a few hours before sundown. To make things worse, they become separated from each other by two miles of rushing river. Then, Dave traps an irate skunk.

Teti and Graham are lost in New Zealand’s Fiordland

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.