Grow Griswold — the young father and the exemplary family man who very much wants to rally family and to recreate vacation from the childhood. Together with the spouse and two sons he decides to make an unforgettable trip through the whole country which ultimate goal will be the best theme park of America. Having carefully planned everything, they start on the journey, hoping that they are waited by very cheerful and fascinating travel.
At the beginning of a way everything occurs as well as possible, but the further they move away from the house, the more problems wait for them ahead. Everything went at all not as planned to Grow, but he is not going to stop and is ready to do everything possible to reach the destination and to present to the family the best vacation.