Austin Stevens goes to Borneo to find the Reticulated Python. He soon finds the snake on the edge of a river bed. Thinking it was a small snake hidden beneath the log, it turns out to be a 20-foot snake which bites Stevens on his arm (edited off in the final episode, but shown in Most Striking Moments) and coils around his waist.
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.
Austin handles a black mamba in the Namibian desert. Black Mambas are the second largest venomous snakes in the world.