Extreme travelers Mark Anstice and Olly Steeds begin a unique expedition into the rainforests of West Papua to track down and live with the remarkable Kombai tribe, a people whose way of life hasn't changed since the Stone Age.

Mark and Olly learn to live off the jungle in the same manner as the Kombai.

Mark and Olly attempt to make their own treehouse, but their efforts are futile. The Kombai offer to build them their own treehouse.

Mark and Olly uncover the brutal reality of the Kombai justice system, when a murder is committed.

Mark and Olly create some gifts for the tribe.

The tribe has a festival and invites Mark and Olly to be hosts.

Mark and Olly trek through the mountains of West Papua seeking a sufficiently remote village for their adventure. After an unwelcoming greeting, they convince the village of Merringman to allow them to stay.

Mark and Olly get bossed about by chief Markus, eat tadpole kebab, get roped into a wedding from hell and, to their horror, hear tales of tribal revenge killings.

Mark and Olly get bossed about, suffer from sleep deprivation, attend an elder's funeral and get initiated in the tribe's traditional penis gourds - painful!

Mark Anstice and Olly Steeds begin constructing a new house, are reprimanded for not wearing their traditional penis gourds, hear gossip about sex lives in the village and become embroiled in a tribal rape trial.

A sighting of suangi leaves the tribe terrified that they may be under attack by supernatural forces. As Mark and Olly help rebuild the village, Merengman's dark past rears its ugly head, and the tribe is forced to call on the services of a traveling shaman.

A food shortage calls for desperate measures and the tribe are forced to build a bridge across the river to get help from their traditional enemy, the village of Minay.

Mark and Olly visit their tribe's traditional enemy, only to find money, clothes and religion.

Merringmen throws a farewell party for Mark and Olly before they leave for home.

Mark and Olly trek through the jungle to the Machigenga village Koran Korata, where they must prove themselves worthy of living in the village.

Mark and Olly visit a local shaman near Koran Korata who guides them on a drug induced spiritual journey.

Mark and Olly must build a house to live in. Mark is asked to care for an orphaned Woolly Monkey.

Chief José's son goes missing after a sudden rain causes the river to rise to dangerous levels. A gang of armed colonistas unexpectedly visit the village. José's pregnant wife Rosita goes into labor.

Mark & Olly must defend the village's reputation in a local tournament where they compete in archery and eating! They also endure a tribal ceremony where they are stung by bees. They are also taught to hunt and track down monkeys.

It's harvest time in the village and the excess crops must be transported downriver and exchanged for metal goods. But first Mark and Olly must successfully build a dugout canoe from the villages most ancient and valuable cedar.

Mark & Olly hear they may get to witness the ancient rituals of a wedding. But before he will give his daughter's hand in marriage, the chief wants to test the young suitors manliness, and Mark and Olly must provide some healthy competition.

After four months living with the Machigenga, Mark and Olly prepare to leave the village of Koran Korata.