in the beginning of the story you are introduced to the characters- Steve brand, charlie, don martin, Tommy, and Les Goodman- and the setting- a small neighborhood at 6:30.
in the rising action something crashes into the earth and takes all the power out, later Steve realizes that the cars and radios aren't working either.
Steve comes up with the idea of walking into town to go find help, but Tommy stops him and tells everyone about the possibility of aliens.
after some arguing the neighbors come to the conclusion that there are aliens among them and they start pointing fingers. then they hear footsteps approaching and think it is one of the monsters, so charlie grabs his gun and shoots. he had shot Les Goodman, and killed
because charlie shot Les everyone suspects that he is the alien, this started a huge fight between the neighbors. all of the neighbor eventually turned on each other and tore themselves apart.
in the end it pans to the real aliens sitting on a hill watching the neighborhood get torn apart, they say that this was all part of their plan.