Ten teams of two work together and compete in extreme challenges and conditions on New Zealand's South Island. One team is sent home at the end of the leg.

The nine remaining teams continue their journey in New Zealand, where a helicopter drops them at the foot of a steep cliff that they must scale in order to compete the next challenge; lack of food begins to affect the participants.

The eight remaining teams come face-to-face with waterfalls and intense emotions.

The seven remaining teams confront their most grueling journey to date.

The six remaining teams are taken to extreme heights to complete their next challenge.

The five remaining teams must work together in freezing conditions in order to survive.

The four remaining teams confront their next challenge as they get helicoptered to the top of a glacier, where they must navigate unforgiving terrain and dangerous crevasses. With high altitudes and fewer resources, the tasks become more demanding. In the end, the three teams that remain will compete in the final journey and the one team that has shown the most heart, courage, initiative and resolve in their quest to get out alive will claim a life-changing grand prize of $500,000. Bear Grylls hosts. Written by Anonymous

Bear Grylls chooses a winning team in the first-season finale, but first the remaining three pairs test their limits in a rain forest during a torrential downpour.