In the sun-scorched Sahara Desert, Grylls uses survival tactics of the indigenous people, including eating a scorpion and a sandfish. He also explains how to escape from quicksand.

In the desert, Grylls offers tips on skinning and disemboweling a dead camel for water.

Grylls travels to Panama, where he travels in the equatorial heat through mangrove swamps and rain forest, and endures more than 100 mosquito bites and one painful snake bite.

Survival techniques for Panama's mangrove swamps and jungle.

Grylls parachutes into Patagonia, the southernmost tip of South America, where he first encounters a vast ice field, then forages in a beech forest, wades through a frozen bog and swims through icy water.

In Patagonia, Grylls skins a hare, scales a cliff, tracks a puma, drinks dirty water, and crosses the Perito Moreno glacier, a vast frozen labyrinth of ice caves and crevasses.

Grylls offers tips on dining in the wild, with some unusual offerings that are not necessarily palatable.

Grylls drops into the mighty Zambezi river.

Grylls parachutes into the heart of the Namib desert.

Grylls battles the fierce swamps in Sumatra, Indonesia. As he struggles to keep dry and avoid trench foot, he runs into several types of wildlife, including lizards and the deadly mangrove snake.

Dropped by helicopter, Grylls has to survive on a remote island located in Indonesia. He hunts for stingrays and land crabs while drinking whatever fresh clean rain water he may get. In the end he builds a small raft out of drift wood of bamboo and heads to the sea.

With temperatures dipping to -50°C, Grylls has to keep warm before hypothermia sets in. He uses snares to catch his food, and a fire to keep warm. He puts up a scenario for the great dangers to walk over a frozen lake, and how to survive without drowning and/or before hypothermia sets in.

Grylls is in Siberia, learning survival techniques from the Tuvans and, eating raw yak liver as well as drinking its blood for food.