When the hot-headed Professor Challenger claims that extinct species of animals remain found living on an isolated Amazonian plateau, Dr Summerlee, Lord John Roxton and intrepid reporter Edward Malone find themselves focused on a journey of a lifetime. Arriving in the Amazon . com, they find themselves marooned and at the mercy of dinosaurs and a murderous tribe of hominids. Can they survive to fulfill their scientific interest? Will they be able to escape and buying information of their discoveries? With David Robb and full solid. Directed by Marilyn Imrie and dramatised by Chris Harrald.