Ben Gaunt is twenty six and a recently qualified teacher who is presented with the opportunity of a lifetime.

As a talented and experienced caver he has been chosen to join an international expedition to explore a newly discovered underground river system, one thousand feet beneath the jungle floor, in the remote central highlands of Papua New Guinea.

The Kanak is a majestic limestone cave system, carved out by a vast river over countless millennia and offers real excitement for all the, adventure-junkie, team members until disaster strikes.

One slip and Ben is swept away downstream into uncharted blackness to make an extraordinary discovery.

Against all odds he returns, alive but injured, with evidence of something so strange, that it undermines our concept of the history of civilization and provides a legacy that could potentially threaten the future of our planet.

This is when the real adventure begins.