The Simpsons run to the couch, only to find The Blue Man Group performing (unlike the version shown in The Old Man and the Key, Homer doesn't say "What the..." after he sees The Blue Man Group and the Blue Man Group play louder and more aggressively)
Springfield is in the midst of a massive heat wave. Every building in the town has installed a large air conditioning device. However, this draws a lot of power from the Springfield Nuclear Power Plant. Despite the safety measures Mr. Burns has taken (cutting power to the orphanage), the plant is at full power. At home, without an air conditioning device, the Simpsons have to follow an old-fashioned fan. Homer decides to give them a taste of winter by plugging in his dancing Santa Claus. This overloads the plant and causes a town-wide blackout. Eventually, a huge riot and looting occur. The police try to intervene, but are powerless to stop the massive crime wave.
The next day, Springfield has been devastated by the crime. Mayor Quimby decides to take action by forming a Blue Ribbon Committee. At the Simpsons’ house, someone stole Lisa’s Malibu Stacy collection. Homer decides to take action by finding them. He finds the culprit, Jimbo Jones, and later foils a robbery by Snake Jailbird at the Kwik-E-Mart. He goes through a very long list of his previous jobs and decides that he likes the idea of combining his love of helping AND hurting people. Homer forms his own security company called “SpringShield.” Although it only has Homer, Lenny, and Carl, it is more efficient and successful than the Springfield Police Department. When Quimby sees Chief Wiggum trying to shoot a Piñata with a shotgun, he dismisses Wiggum and makes Homer the chief of police.
After stopping one of Fat Tony's operations, Homer practically rids Springfield of crime. However, Fat Tony escapes and vows to kill Homer unless he leaves town. Homer is unable to get protection from the citizens he protected (only Ned Flanders volunteers, but Homer ignores his offer) and Lenny and Carl lock themselves in a jail cell. When Homer does not leave, Fat Tony arrives with a few of his own henchmen (including Johnny Tightlips), as well as mafia muscle—the characters of the Sopranos series. Just before they are about to kill Homer, someone shoots the mobsters and injures them. Safe again, Homer makes Wiggum the chief of police again. When Marge thanks him for saving Homer, Wiggum says that he didn't shoot anyone, having lost his gun, badge and nearly his squad car. Unbeknownst to them, the person who saved Homer was Maggie, who fired at the mobsters from her window with a scoped sporting rifle.
In the beginning of the episode a butterfly catches on fire as a result of the heat wave hitting Springfield. The butterfly is the grown up "Screamapillar" from the previous episode entitled "The Frying Game".
The characters that walk past Skinner include Jughead Jones, Fat Albert, and Fonzie. Jughead Jones and Fat Albert have both appeared in animated cartoons produced by Filmation.
Groundskeeper Willie says that the school's air conditioner is wasting more energy than Ricky Martin's girlfriend, a reference to the rumors that have been spread about the pop superstar's sexual orientation.
The picture Otto is carrying by while the Simpsons watch is Picasso’s Guernica.
The scene where Homer is trying to recruit people to help defend himself against Fat Tony and co. is similar to a scene in the western High Noon from 1952 with Gary Cooper.
When the power goes out, Moe says, “I’m gonna miss FOX Celebrity Boxing!” FOX Celebrity Boxing aired the same night as this episode did.
The short dialogue between Fat Tony and the ferret wearing a wire: “You’re not a pet, and you’re not a friend. You’re nothing to me” is a direct parody of the end of the conversation between Michael Corleone and Fredo Corleone in The Godfather Part II: “You’re not a brother, and you’re not a friend. You’re nothing to me.”
In the same riot, several looters steal musical instruments from a Music World store. The song they proceed to play is the Notre Dame Victory March.
At the end of the episode, Homer compares Maggie to Clark Kent, saying that whenever something exciting is happening, "he’s nowhere to be found".
One of the hats in the Woolly Bully hat store is a Cat in the Hat hat.
In the church after Fat Tony's death threat, Homer reminds the congregation that he dressed as Jar Jar Binks last Halloween.
The Sea Captain says that he can't help Homer because his TiVo is full of unwatched Dharma & Greg episodes. At the time this episode aired, Dharma & Greg had finished the 2001-02 season and ABC was still considering its future, but the network ended up cancelling the show during the summer.