On a quiet suburban Maple Street, somewhere in America, residents notice a meteor-object flying overhead. All the residents are questioning the flying object and suddenly all electricity shuts down.
A young boy named Tommy tells a story he read about in a comic book about aliens arriving from outer space. The people start to suspect each other of being secret aliens after believing his story.
Suddenly Les Goodman's car mysteriously starts. Everyone accuses him of being an alien. Steve tries to talk sense into the others, but is instead being believed as a suspect because of a radio in his basement.
The neighbors see a figure coming towards them. Charlie grabs a gun and accidentally shoots Pete Van Horn. Suddenly Charlie's lights go on, and now he is the main suspect.
Everyone is going crazy! Charlie screams and says the real alien is Tommy, the one who said there were aliens in the first place.
In the end, aliens watch the humans destroy themselves, by turning on each other. The residents themselves were the real monsters, not the aliens.