Five years after the murder of his wife and disappearance of his daughter, former police officer Jeremy Duffin is brought back to help in the hunt for a yuletide monster that punishes children that have been "naughty." As the monster becomes more erratic and unpredictable, Jeremy learns the truth about the disappearance of his daughter and the fate that has been bestowed upon him by an unlikely source. Can Jeremy finally end the nightmare Christmas monster that has terrorized this town for years?

Jeremy, a local police officer leads a life of a confusing past, spending his current time searching for his kidnapper as a child. After other children begin missing, Jeremy pieces together the truth and realizes that his childhood kidnapper could be a creature of ancient yuletide lore, Krampus, who is the brother of St. Nick, and punisher of children who perform acts of unspeakable evil without repercussion. Can Jeremy kill Krampus and prevent more missing children?