South Park S06 E11 Child Abduction is Not Funny

"Four boys. One f**ked-up town."

In an effort to protect their children from kidnappers, the parents of South Park hire the owner and operator of the local City Wok to build a Great Wall around the city. When crazy things like Kid trackers and Mongolions come into the picture. The parents learn a very important lesson themselves about trusting strangers.