The massive triangular mountain called Walsh Pyramid stands one thousand metres above the floodplain in Far North Queensland. Eight army cadets are hiking towards it, when they encounter a shadowy figure who tells them a tale so bizarre they find it difficult to believe. But not Stephen Bell. He knows it is true and urges the group to act immediately. As they clamber up the mountain in a desperate race against time, they collide headlong with forces they barely imagined could exist. Over the ensuing four days they are tested emotionally, spiritually and physically as they seek to vanquish the evil that lurks atop the mysterious pyramid. An evil that knows no limits.