Roy (Patrick Swayze) and Candy (Charlize Theron) and Lonnie Earl (Billy Bob Thornton) and Darlene (Natasha Richardson) are two married couples who thought they knew one another, until they decided to take their dream vacation together. Now they’re hitting the road in a brand-new SUV and having the time of their lives, until a funny thing happens on the way to the monster truck show in Reno. Lonnie Earl, it seems, has a thing for Candy, and when evidence of this starts to surface, tensions rise.