A woman who is researching alien abductions for a book receives increasing reports of nocturnal attackers who are described as resembling Santa Claus. She enlists the aid of a scholar of mythology to see if the legend of Santa has a darker side, and what she discovers is more horrifying than she could never have expected.
At the beach, a pumpkin washes ashore and is promptly and cruelly destroyed by two young women frolicking on the sand. When they crush the pumpkin, their legs become covered in an inexplicable red liquid. Fast forward to mischief night when these same two women and their friends find themselves being stalked by a killer Pumpkinman. Is he just a sicko in a costume or something more bizarre that has marked them for death?
A group of friends get together for a card game, but within 5 minutes most of them die horribly, leaving the hosts to run for their lives (and from the law). Along the way, they encounter every conceivable horror movie monster/villain, but with a new twist.