 Follows the Griswold family, Clark and Ellen along with their two children Rusty and Audrey, as they venture westward from the suburbs of Chicago to the Disneyland-like theme park, Walley World. Clark has planned the trip down the last detail, including seeing the world s largest ball of twine. However, Clark s pursuit of adventure is matched by his dimwitted bumbling, leading to a vacation his family will not soon forget.