In the dead of night, backpackers carrying rifles and grenades meet up in the Peruvian jungle for the beginning of a 5000km journey that could cost them their lives.
Between them, the young men are carrying 30kg of cocaine paste - which will eventually be worth $A973,000 by the time it reaches users.
The dark and dangerous hike is the very first step in a supply chain that will see their paste smuggled to all corners of the world, from Miami to Melbourne.
And even at this stage, the traffickers are risking their lives transporting their illicit cargo - which some start doing when they're just 15.