Steve Backshall travels into the heartland of Papua New Guinea, a lost world covered in thick jungle and teeming with strange wildlife found nowhere else on earth. Working with an international team of scientists and film-makers, Steve's aim is to document the wildlife here and discover new species. On his first mission down river rapids and through tangled forests he discovers a bizarre venomous catfish, comes face to face with a death adder, and stumbles into a forest dripping with thousands of frogs' eggs.