With old and young now living side by side, the islanders are hoping to hit their stride. But the lack of food is an ever-pressing concern, and tempers are fraying. Jordan is feeling out of sorts and then has a fight with Richie. The group are furious when Phil uses some olive oil to boost the fire rather than for food. And soon there's another bust up, bringing relations to breaking point. Could a shocking vote see the islanders turn on one of their own?

Survival expert Bear Grylls looks at how two groups from two different generations lasted five weeks on an uninhabited Pacific island. Marooned with only a handful of basic tools and the clothes on their back, the castaways had to endure extreme weather and stormy relations within the group. Bear returns to meet the castaways to find out first-hand how they did it. Was it the wisdom of age or the energy of youth that proved most valuable?