Deep in the Queensland rain forest lays a remote and inaccessible valley where Australia's biggest snake, the Amethystine Python is rumored to congregate. Austin Stevens embarks on a journey to find this hidden valley and photograph its enormous inhabitants in a race against time. Impending storms will make getting into the valley impossible or could leave him stranded once inside. On his way, Austin encounters some of the world's most deadly snakes and some of its most treacherous terrain on a journey that has cost previous explorers their lives.