The Coopers have a gorgeous kitchen. And since it's Christmastime, those granite countertops are lined end to end with magazine-ready displays of food: fresh chocolate pastries, fluffy mashed potatoes, brilliant red tomatoes, a shimmering glazed ham with pineapple slices. The extended family gathers only once a year under the same roof and Charlotte (Diane Keaton), the matriarch, wants everything to be perfect. Even Rags, the family dog, has a festive red bow tied around its neck. This is all pretext for a holiday entertainment that feels more like a horror movie.