After the colossal blunders in Vacation (1983) and National Lampoon's European Vacation (1985), well-meaning Clark Griswold wants to have a good old-fashioned Christmas. But it takes more than good intentions to organise the ideal holiday. And this year, Clark will have to work twice as hard to create the perfect illusion. After all, no one can work miracles when unsophisticated relatives crash your party, monumentally defective electronics threaten to blow the house to smithereens, and a cinematic brush with the law jeopardises the celebration. Perhaps one thing can save the day: the Griswolds must work together. But how hard can it be to get into the spirit and host the most memorable Christmas vacation?