When Charles Lee Ray needs to get quick escape from cop, Mike Norris, he takes his soul and buries it into playful, seemingly good guy doll Chucky. Little does he know a little boy by the name of Andy Barclay will be the new owner of him soon-to-come. Charles confides in Andy while he commits numerous murders. Once the adults catch up to Andy's story as truth, it's too late.

Four months before Christmas, Sarah and Matthieu Scarangelo were in a car crash, of which Sarah and her unborn baby were the only survivors. On Christmas Eve, Sarah stays home alone, where she grieves her husband and prepares to go to the hospital the next morning for the delivery. As night falls, a woman knocks on Sarah's door asking to use the phone. When she refuses, the woman reveals that she knows Sarah and tries to force her way in. Sarah calls the police; they inspect the home and determine the woman has left, but promise to keep watch over Sarah through the night. The woman returns and tries to take Sarah's unborn child, but Sarah locks herself in the bathroom. The strange woman torments Sarah through the night and kills all who try help her.

John Klein is involved in a car accident with his wife, but while he is unharmed, his wife mentions a moth shaped creature appearing. After her death, John begins to investigate the secrets behind this mentioned Mothman. It takes him to a small town of Point Pleasant, West Virginia, where he discovers a connection with the same problem. Here he meets Connie Mills, while he continues to unravel the mystery of what the Mothman really is.