On Maple street somewhere in America, we are introduced to the residents who are talking to eachother.Than a metor light pases by, making all the electricity go out.
A boy named Tommy tells the people about what he read in his comic book about Aliens disguised as humans. The people start suspecting that one of the family's could be causing this and is disguised as humans. He tells steve not to go to town.
When Mr. Goodman try's to start his car, it doesn't turn on at all. But when he walks away from it, kit starts by itself. Everyone then becomes suspicious of him and thinks that he is the monster causing all of this.
As a shadow rises in the distance, Charlie grabs his shotgun thinking that it is the monster. As the mob goes towards the strange shadow Charlie shoots the figure. What he finds is that he had shot Pete Van Horn who was coming back from town.
Everyone then becomes suspicious of Charlie because he was quick to kill. Then the mob chases Charlie onto his porch and this starts the chaos on Maple street. Everyone then starts suspecting that certain people are the monsters.
As the story ends the "aliens" in the sky talk about their plan to take destroy the humans by messing with the electricity and letting them destroy themselves.