A deadly spider bite puts Gwen, an Alaskan homesteader at risk of tapping but she works with her partner to get her revenge, in the 130-degree heat of the Mexican jungle.
A haunted Colombian rainforest punishes the survivalists with threats from deadly jaguars, 300 species of snakes and relentless biting insects. But their challenge is threatened when they don't heed the curse of the jungle.
In a punishing Brazilian savannah, survivalists Wes and Jesse deal with searing heat as well as paralyzing wasps, aggressive bees, and poisonous rattlesnakes. Starvation forces Jesse to attack a beehive in search of honey and the entire colony retaliates.
In Mexico's unforgiving, cenote-covered landscape, two fan survivalists are dropped on an island filled with venomous coral snakes, territorial jaguars, blood-sucking chiquistas and a duck named Henry that they desperately want to eat for dinner.
Avoiding dangers of a rushing river, two survivalists brave a vast cave system in the Colombian rainforest. Trying to survive 21 days, the jungle tests them with threats like venomous fer-de-lance snakes, piranhas, and biting insects everywhere.
On a sun-scorched Brazilian island, aggressive anaconda and deadly stingray torment survivalists Whitney and Nathan, pushing both of them to their breaking point. Working together they use their hunting and fishing skills to try and make it 21 days.
All-Star survivalists Jake Nodar and Melissa Miller take on a punishing Florida swamp teeming with poisonous snakes and aggressive alligators. When one of the survivalists becomes disoriented local authorities are called in to conduct an all-out search.
A survivor of rattlesnake, shark and bear attacks teams with Brooke, an elite hunter and wife of N&A veteran Matt Wright. Together they take on lions and hyena in a vicious African feeding ground where the environment quickly puts their skills to the test
When a third survivalist crashes the challenge, tension and jealousy are just as threatening as the piranha and jaguars of the Ecuadorian rainforest. Claims that there's more going on than just survival puts everyone's challenge at risk.
Dropped onto a frozen Alaskan glacier, All-Star survivalists Laura Zerra and Steven Hall scramble to stave off frostbite and hypothermia. Aggressive moose and porcupine are both a threat and a potential food source as their skills are put to the test.
In the mountainous rainforest of Honduras, a survivalist with an unusual past is paired with a hard-headed police detective to try and survive 21 days, but predatorial jaguars, swarms of fire ants and a debilitating injury threaten their challenge.
The first couple to ever take on the 21-day challenge tests themselves and their relationship as they take on the relentless Guyana jungle. They must work together to battle jaguars, anacondas, caiman, and more than two-million species of insects.
Two pairs of survivalists are surprised when they must take on the deadly jungles of Panama side-by-side. But before their 21-day challenge begins, they have to re-think their survival strategies along gender lines. Will they stay together or go it alone?
Elite survivalists Matt Wright and Gary Golding are tested by deadly spitting cobras and territorial elephants in an African killing zone. But Matt and Gary aren't alone each must protect a novice survivalist from the threats surrounding them.