Join Stephanie Pellet, the smartest guinea pig in Britain, on a time traveling journey to The Big Bang. Doctor Finklefox claims she's not mad, but she'll do anything to get her time experiment to work. She's zapped countless of guinea pigs into the distant past. But this time, Stephanie Pellet gets the machine going. Join Stephanie and her guinea pig friends on a trip back 13.7 billion years in time - to the very beginning of everything. In order to keep the science accurate, the eminent physicists Dr Stephen Swarkin and Albert Porcupeinstein provide a running commentary.