As Christmas approaches, deep snow cloaks the little town of Pitkirtly, an armed robbery takes place and Jemima's husband Dave disappears. Amaryllis, searching for adventure, wants to go on an epic quest but Christopher, needless to say, isn't at all happy about the prospect. They both find themselves trekking through the snow anyway. Meanwhile at the police station Charlie Smith and his men, trapped at work by the weather, celebrate Christmas in style with microwaved sprouts and virtual crackers. Things can only get worse as, under cover of snow and ice, two desperate men make their evil plans.