The story of the number one is the story of Western civilization. Terry Jones (of Monty Python's Flying Circus) goes on a humor-filled journey to recount the amazing tale behind the world's simplest number. Using computer graphics, "One" is brought to life, in all his various guises. One's story reveals how celebrated civilizations in history were achieved, where our modern numbers came from and how the invention of zero changed the world forever; and saved us from having to use Roman numerals today.