Leaving the islands, the guys head into mainland PNG and drive up into the rugged Highlands with their friend Nick. They travel through Goroka, where they take part in an embarrassing Mudmen dance ritual involving bows, arrows and loincloths. They prepare for an epic journey: A private flight north to a remote grass airstrip, where they have three days to make their way down the extremely remote Sepik River and try to become true men of the Sepik.