The Island with Bear Grylls

After Bear drops the men off on the island, the enormity of their task begins to dawn on them. They need to find shelter and water, and make fire, or their time on the island will be over.

It's been 48 hours since the men had a meal and hunger grips the group. The race is on to bring food back to camp before they become too weak to hunt.

With the men losing weight on a diet of just 300 calories a day, Ryan heads off alone in search of food. But without water, he soon finds himself lost and in imminent danger.

Three weeks into their survival experience, the group is barely getting by on a meagre diet of snails and coconuts. Willing to take ever greater risks, Mike and Chris battle with dangerous tides in search of much needed fruit.

The men enter their fourth week of living on the island with the group hungry and divided. They elect an island leader, but not everyone appears ready to back the choice.

Bear Grylls visits the men at the end of their stay on the island to explore how they coped with the experience and how it affected them. He also gives a unique behind-the-scenes look at how the series was made.