Ten survivalists from previous seasons return for a chance at redemption and a second chance to win the $500,000 prize; this time, survivalists face the dangers of Northern Mongolia, a location more wild and more remote than they've ever seen.

Participants explore new - and risky - food sources in Mongolia. As the survivalists begin to settle into their new remote surroundings, they realize they're not the only predators on the prowl.

The survivalists begin to face external and internal threats as they work to secure food and complete their shelters. One participant comes face-to-face with one of Mongolia's deadliest predators, while another fights to overcome a debilitating health issue.

Mongolia shows how devastating its climate can be as a monstrous storm assails the remaining survivalists. The participants are forced into their shelters and can only hope they’ll hold up to the fierce wind, rain and lightning.

The seven remaining survivalists are pushed to their limits as the weather worsens in Mongolia; one participant turns to tree bark for sustenance, another questions his ability to kill for food, and one faces a predator lurking in the darkness.

After almost a month of solitude, the remaining participants begin to crack. One survivalist’s shelter turns into an unbearable “green monster,” while another takes extreme measures waging war on an uninvited guest.

Some of the survivalists enjoy a bonanza of food, and others are driven to desperate measures to sustain themselves. A hunter braves dangerous heights to stalk his prey, and another turns to one of Mongolia’s most revolting food sources.

The survivalists must catch any game that comes their way, no matter the size, since winter draws near and food becomes scarce. However, the lack of food isn’t the only challenge, as the lack of companionship drives one participant to face his biggest fear.

As food sources disappear, hunger drives the remaining participants to a new low; one attempts a risky climb into wolf territory in search of food and another contends with a potentially game-ending health issue.

The final remaining participants face the onslaught of Mongolia’s brutal winter. Relentless hunger and savage cold test them like never before and in the end, only one will walk away with the $500,000 prize.

As the weather gets colder and even less forgiving, the participants struggle to obtain basic resources. One participant continues to lose weight at a rapid and deadly pace, while another continues to be harassed by ruthless predators. Another contestant wakes one morning to a grave discovery and realizes that the Arctic winter has only just begun.

Ten new participants last 100 days in the Arctic to win $1 million, and they must overcome the first hurdle,which includes facing a variety of predators.

In order to endure the Arctic for 100 days, the participants start building shelters that can make it for the long haul, turning their attention to procuring food and inadvertently drawing the attention of dangerous predators.

As they enter the second week of the competition, the participants focus on securing a food source that can last them 100 days. Many focus on fishing, another puts himself in a dangerous position to keep his food safe -- with disastrous consequences.

Participants begin successfully procuring food but still find themselves vulnerable to the Arctic's many dangers. A sudden illness attacks one participant, while another is tormented by a tiny invader.

Faced with choppy waters and brazen predators, the participants must shift strategies or starve. One sets his sights on big game.

After some of the participants are raided by predators, they scramble to protect their hard-won food. Winter moves in, bringing with it new opportunities for those who are prepared, and new threats for those who aren't.

Local predators continue harassing the participants and they must adapt and innovate if they hope to survive. One is forced to make a hard decision when an unexpected catch turns up.

One survivalist rushes to prevent their shot at a million dollars from going up in smoke. Another struggles to complete their shelter in time for winter, while another must defend their territory from an unwelcome visitor.

Icy rocks and unpredictable waters force the remaining participants to decide if their desperate need for fat is worth taking dangerous risks. One participant is faced with a deadly predator threat and braces to fight for his life.

As the participants march deeper into winter, it becomes increasingly difficult to procure food. One participant gets a lucky break, but soon discovers things aren't what they seem. Another attempts to do battle with his own mental demons while another's time in the Arctic comes to an explosive finish.

With only three survivalists left, the million-dollar challenge comes to an end. The participants face off against below zero temperatures, injury and their own mental demons as they fight to make it to day 100 and win the million-dollar prize.

Reeling from a storm, the remaining participants continue to deal with the consequences of their actions; one survivalist's food supply is threatened, while another reveals a secret that jeopardizes their chances of winning.

Burdened by a string of bad luck, the remaining participants find their chances of success begin to slip away.

The remaining three survivalists continue to push their limits as they reach nearly a month in the Great Karoo Desert.