A happy suburban community begins to panic when they are notified that their new neighbor is a child molester who has served his time and been released back into the world. After his daughter has several near-incidents with the man, Jim Osgood realizes he has to do something. He shoots the child molester and his neighbors readily provide an alibi for him. Unfortunately, the next day they receive a letter telling them that the first one was a mistake, and the man he killed was innocent.