Hoping to bring his family closer together and to recreate his childhood vacation for his own kids, a grown up Rusty Griswold takes his wife and their two sons on a cross-country road trip to the coolest theme park in America, Walley World. Needless to say, things don't go quite as planned.
The film revolves around a local street-racer who partners with a rich and arrogant business associate, only to find himself framed by his colleague and sent to prison. After he gets out, he joins a New York-to-Los Angeles race to get revenge. But when the ex-partner learns of the scheme, he puts a massive bounty on the racer's head, forcing him to run a cross-country gauntlet of illegal racers in all manner of supercharged vehicles.