After two months on the road, they have arrived in blistering heat of the Namibian bush for their fifth challenge - to join the Ju-Wasi tribe of San Bushmen on a traditional hunt in an extremely inhospitable environment. The hunter-gatherer way of life practiced by the Bushmen goes back to the dawn of mankind, and they are supremely skilled in surviving in a place that has little food, virtually no water and arid, baking heat. Top hunter Duee has taken on the task of turning the five Brits into expert trackers and hunters in just six days - if they survive that long. They must learn to take food wherever they can find it, seek out muddy water in any crevice and make fire to ward off predators. Easton might be feeling pretty good after being named Carlito's top tribesman in the Amazon, but how will he deal with the heat and will he still be at Nick's throat after spats in Mexico and Brazil? Can veggie Ben really hack it as a hunter?