On quiet suburban Maple Street at 6:43 p.m. somewhere in America, a meteor-like object is seen flying overhead. The streets are tree-lined and the houses have front porches. All electronics and electricity go dead. The main characters introduced in the exposition are: Tommy, Steve, Bran, Charlie, Don, and Martin
A boy named Tommy shares a story from a comic book about aliens arriving from outer space. People believe Tommy's story and start to suspect each other of being aliens.
Tommy's the alien!
Pete Van Horn goes to check the next block to see if they have power. Mr. Goodman's car starts on its own and everyone accuses him of being an alien. Steve becomes a suspect when someone mentions his radio he works on in his basement.
It works every time!
The residents see a figure approaching in the distance. Charlie grabs a gun and shoots. They realize he shot Pete Van Horn who is returning from the next street and killed him. The lights on Charlie's house come on and he is now the prime suspect.
Everyone becomes hysterical. All the houses' lights are flashing on and off. Charlie says that Tommy is the real alien.
Aliens watch from a field as the town destroys itself. The aliens turned the residents against each other with their trick The residents of Maple Street are the real monsters.