Duffman comes in to Moe's and gives Homer free schwag, including a Duff dufflebag that Homer brings into work. Desperate to find a new place to hide hazardous waste, Mr. Burns has Homer's duffelback stuffed with the hazardous material. When Homer leaves the bag unattended at a train station, on his quest to find the best Mac & Cheese, it gets blown up and the city thinks it was a terrorist threat. Soon the town finds itself loaded with surveillance cameras everywhere based on the UK model.
Flanders leads the crew of camera operators and soon finds himself the only one and drunk with power when he discovers he can talk over the camera to people. Bart discovers that in his backyard there's a blind spot that the cameras can't see and soon the whole town's sins get cramped into their small circle. OVerhearing Marge, Flanders learns of the blind spot and comes to break up the good time. Homer helps Flanders realize that he's been comitting the biggest sin of all... playing God. Flanders helps Homer destroy all the cameras.
Meanwhile, Lisa joins the debate team but discovers stereotypes about her blonde hair is holding her back. Lisa dyes her hair and begins winning her debate, which is fittingly about conforming. After winning, she reveals she dyed her hair by showing her roots.