 Chicago native Clark Griswold has decided to take his wife ,Ellen, kids 14 year-old Rusty and 12 year-old Audrey to a Los Angles theme park called Walley World. But when Audrey takes up pot smoking and Rusty reads porno magazines, annoying Cousin Eddie sends spiteful Aunt Edna to join them on their trip, the Griswolds get stuck in the ghetto, Aunt Edna dies, Clark drives off the road, hillbillies take all their money, and Clark is shot at in a Dodge City bar, will their vacation be all it was cracked up to be?