Jon Christensen had played many jokes on his friend Austin Brooks over the years. Now Austin, with the help of his wife and Jon's future wife pull the ultimate prank on Jon by blowing up his precious Lexus. But to make matters even crazier, the man responsible for the explosion is a back woods hick named Uncle Buck. Jon finds out eventually that under a lot of make-up from professional make-up artist Kevin Yagher (Face-Off, Leminy Snicket), Uncle Buck is really Austin Brooks!