Forty years ago, a team of Space settlers Crash landed on a desolate and undiscovered planet. They are under attack and running out of hope. "The Traveler", constructed from remnants of their mutilated space craft has become their only protection from the perilous planet. Many lost their lives building the Traveler, a city sized wheeled craft that is forty seven city blocks wide and twenty stories tall. The human population on the uncharted planet has grown to that of a small city. So have the unseen dangers.