Sixty-five-year-old Fred Montrose wakes up in the wrong place and the wrong body with no idea how he got there. He 's been transformed into a teenager, and seventeen-year-old Brent Slaymaker is in his body. When they meet, it 's instant dislike. Fred sees a hot-tempered old man who seems headed for a stroke. He 's got to teach the elderly dude to take his blood pressure pills and protect his health. The old man has a different idea to pursue his dream of becoming a Nascar driver. Using Fred 's money. To stop him, Fred takes up driving himself. The two go head to head on a small town track, then race again in a lunatic chase across the state of Indiana. The prize may be the attractive grief counselor who encourages both. Or maybe it 's just a demented macho thing. At any rate, youth faces age in a tale of male rivalry, with all the bragging, lying, trash-talking, and trickery that go with it.