Even with the advancement of technology, there are still people on this planet leading a stone-age lifestyle, cut off from the outside world. One such group is the Korowai tribe, an ethnic people living in Papua, Indonesia, who have been reported to practice ritual cannibalism. Believed to number only around 3,000, the Korowai first came into contact with Westerners in the 1970s. Guyue will lead us on a visit to the Korowai, when he takes a stroll in the rain forest and is given a lesson in hunting.