The man behind legendary science fiction films "The Terminator," "Aliens," "The Abyss" and "Avatar" explores the origins of a genre that has morphed from a cult following into a cornerstone of pop culture. Oscar-winning writer, director and producer James Cameron reaches back into sci-fi's roots to better understand how fans' favorite films, TV shows, books, and video games were born. Cameron's journey of discovery includes his interviews with contemporaries -- Steven Spielberg, George Lucas, Ridley Scott, Sigourney Weaver and others -- who debate the merits, meanings, and impacts of the films and novels that influenced them and discuss where the genre -- and our species -- might be going in the future.