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Without any modern conveniences, 14 men fight for survival on a deserted island.

Day three on the Island proves to be difficult as the men have yet to find fresh drinking water. As they expend energy in the tireless search to find hydration, the realization that their days may be numbered hits the men hard.

With two men off the Island, the remaining 12 men's desperation now turns from water to food. Without proper nutrition some question their desire to stay on the Island, which has everyone wondering if they can survive and make it to the end.

The men with families begin to rethink their decisions for leaving their loved ones behind. Meanwhile, some of the participants band together to try to find food before those contemplating leaving the Island throw in the towel.

Most of the men realize shelters and a community make the difference between surviving and thriving — shelters and a community. However, there is a clear divide as two of the participants remain content to stay separated from the main camp and do nothing.

With the end in sight, the divide between the camps comes to a head. Finally, after a 28-day struggle to survive, Bear Grylls returns and faces a group of truly changed men.