Two Astronauts, Mitch and Tex, land on a planet that they believe is Altair IV. However, the environment seems very much like Texas. They meet a couple of cowboy-types who are clearly alien by their appearance and they talk for a while. After the astronauts head back to their craft, it is revealed that this is indeed Texas, and that they've travelled 50 years into the future. Germ warfare has transformed all humans into mindless zombies, and these aliens ride them instead of horses..