Mike and Dave love being underground, deep underground. They’re friends and cavers, and they’re on a mission to find a new entrance to a spectacular cave. It’s dark, it’s muddy and it’s confined – more so than most people could bear, but Mike and Dave are determined. Will these two singularly focussed mates strike it lucky and find their way into something breathtaking?
Enter into the world of caving, one of New Zealand’s quietest sub-cultures to hear some of the closely guarded secrets of the subterranean world; and discover a story of friendship, trust, persistence in the face of perilous danger and a childlike obsession with crawling around in the mud.