Stan Marsh, Kyle Broflovski, Kenny McCormick, and Eric Cartman visit the Booktastic Bus, a mobile library.
After Barbrady is given a copy of Ayn Rand's Atlas Shrugged, Cartman arrives on the scene and finds out that the bookmobile driver was the molester, to which he responds by whacking him in the kneecap with his nightstick; this prompts Barbrady to show Cartman how to properly deal with criminals, by clubbing the bookmobile driver in the head with his own nightstick.
The town holds a parade for Barbrady, and when he is asked to give a speech, he reveals how Atlas Shrugged convinced him to never read again.
As the end credits play, Kenny, who has narrowly avoided death multiple times earlier throughout the episode, finally dies when a tree falls over and crushes him beneath it.
Originally, Cartman was supposed to receive a gun during his stint as a deputy police officer, but Comedy Central's censors were reluctant to show a child with a firearm.
The season one episode "Volcano" depicted children wielding firearms, but it was allowed then as the usage was considered less controversial by Comedy Central.