Bill, Gary and Ruby set off into the dense Mexican jungle to be the first to drive a car to a volcanic crater lake, rumoured to have been a site of human sacrifice. Gary plans to use the jungle as his supermarket to gather all their food and shelter, while Bill sees the forest as an opportunity to use the vines and trees as swings to push Ruby through the unforgiving terrain – Tarzan-style. But the combination of vicious plants, 5-metre long crocodiles, venomous snakes, insects and hidden rocks prove an unending tropical nightmare.
