After a savage gang of Vikings invade a Saxon Castle, murdering all in sight, now calling the castle their land, one surviving man is helped by a coven of witches, where they promise to help him exact revenge. After a spell is cursed by the group, they have evoked the spirit of Krampus, the Yule devil, who they have summoned to appear to take revenge on all those in the castle, however, Krampus has a deadly price install for the surviving Saxon. One that may in fact cost him his own life.