Harry, a disillusioned toy factory employee, dons a red suit and embraces the identity of Santa Claus with a twisted mission. Believing that the true spirit of Christmas is under threat, he sets out to punish the sinful residents of his town. Fueled by a warped sense of justice, Harry's holiday cheer takes a dark turn as he exacts revenge on those he deems naughty, turning the festive season into a terrifying spectacle. With a blend of holiday spirit and horror, Christmas Evil explores the darker side of Christmas traditions.