Arlen is hit by a heat wave, and Hank takes the kids to the water park. Unfortunately, they have to tangle with a group of surfer bullies to enjoy the "Endless Wave". Meanwhile, Boomhauer tries to regain his coolness after two sexy ladies laugh at him for wearing cutoff jeans, and Bill becomes a local celebrity known as the "Heat Waver" after his car breaks down and he begins waving at passing motorists.