A naive man on a first date is trapped inside a pub turned underground fight arena, forced to survive a night he is completely unprepared for.

Six estranged friends reunite over Christmas, only to accidentally awaken Black Krampus-a darker, older incarnation of the yuletide demon long erased from African folklore. As the creature stalks them one by one, punishing past sins with brutal precision, the group must unravel the legend's buried truth before their names are etched onto his eternal naughty list.