Chevy Chase and Beverly D'Angelo return as Clark and Ellen, winners of a European tour on which their teenagers Rusty and Audrey join them. Deluxe accomodations... aren't. Clark tries left-sided English driving, leaving Stonehenge unhinged. In Bavaria a slap-dancing polka turns into a slaphappy free for all. It's holiday road havoc for the Griswalds - and your high road to hilarity!