1. A man travels into the future and finds an earth inhabited by a different alien race.
  2. An alien crashes on earth and must find materials to repair his space craft.
  3. An alien race finally makes contact. But the scientist who discovers the first contact keeps it to himself and paints a totally different picture of earth than is actual reality.
  4. A newly elected president discovers the truth about government UFO coverups and decides to go public.
  5. An alien race with advanced invisibility technology lands.
  6. A family is entrusted to host the first alien visitor. But he ends up being an emotional and demanding house guest.