The Karoo is a 400 000 square kilometer semi-desert that engulfs a third of southern Africa's landmass. It's a harsh environment where water has always been a scarce commodity and life has had to adapt accordingly. It's another desolate, beautiful part of the country and the top five teams cross tongs in the longest, toughest challenge yet. After an exhausting challenge, there's no elimination round and no second chances to fight to stay in the game. Instead, one more team is sent packing after failing to impress the judges.