Greg's family has a history of strange and frightening occurrences that befall his family's romantic interests when they spend Christmas Eve around his great-grandmother, Granny Hanna. Nonetheless, his girlfriend Joy insists on accompanying Greg to the holiday celebration at his mother's house. True to form, Granny Hanna greets Joy with a chilly reception, but that's just the beginning. Soon Joy finds herself visited by Krampus, the dark spirit of...