After a drinking binge at a bankers party, Marcy reveals herself to be married to a mysterious hunk named Jefferson D'Arcy, whom Al finds out to be a gigolo and con artist. To make Marcy feel better to this unexpected change in her life, Peggy decides to throw a formal wedding ceremony for Marcy and Jefferson in the Bundy's back yard, in which nothing goes a planned.
Told from the point of view of Buck, he runs away from the house feeling neglected. Behind a diner, he picks up a female dog, whom he brings home. He quickly regrets it, as the new dog gets all the attention from Bud and Kelly. Meanwhile, Al is obsessed with getting a taste of his favorite cherry cheesecake from a restaurant in Wisconsin.
When a second floor aerobics studio, full of terribly overweight women, collapses into the shoe store, Al is laid off while the store is being repaired. Al then gets a night job as a security guard at his old high school, Polk High. This prompts his former high school rival, Spare Tire Dixon, to steal his prized trophy which leads to a brutal showdown.
Al is haunted by a tune on the radio he can hum but not name, and he gets no help from Peggy or the D'Arcy's. Al similarly haunts Kelly's new boyfriend, Vinnie Verducci, the son of his fellow lowlife friend, Charlie Verducci, when Al warns Vinnie to only look and not touch, which is not easy for Vinnie.
Al forgoes giving money to Bud for a class trip to Washington DC in order to give to Kelly who's going to an audition for the Miss Weenie Tot spokesperson. When Kelly lands the spot, Al gets a year's supply of his favorite mock food: Weenie Tots. But since uncooked tots rapidly disintegrate upon contact with the air, Peggy manages to spoil every single box while searching for a winning lottery ticket. When Al discovers that he's not eligible for the lottery money since Kelly is now an employee of the Weenie Tot Company, he asks Marcy and Jefferson to accept the money ...
Al and Peggy go over to watch a video at Marcy and Jefferson's house and proceed to take over the place. Meanwhile, Bud and Kelly seek gainful jobs for themselves, but only Bud gains with his first girlfriend, while Kelly babysits a family of seven kids from Hell.
Al cannot afford to buy an air conditioner for the hot summer. After an attempt to install an old experimental model, (which results in a neighborhood blackout) Al moves his family into the local supermarket. After a while, they are told by the owner to buy something or they will be kicked out. After doing so, Al cuts in front of Marcy and becomes the one millionth customer to leave the store. The prize is a shopping spree worth $1,000.
While on their way to Los Angeles for a "Shoe Convention," the Bundy's car breaks down in the small town of Lucifer, New Mexico where they meet an old prospector who gives them a map to an old gold mine in the area in exchange for their car. They phone Marcy and Jefferson who come to the rescue, thinking that the kids are dying. But it turns out that Al and Peggy want their money for the mine deal. Then the six of them go off in search for the gold...
Al, Peggy, Kelly, Bud, Jefferson, and Marcy find the gold mine in the desert. Al discovers the first gold nugget and everyone but the feeble-minded Kelly winds up with a bag full of gold. Al and Peggy have two separate fantasies of how to spend it. But after three days of digging, it's revealed that they're stuck in a tourist attraction seeded with fools gold for the tourists to find. The Bundys and D'Arcys aren't pleased with this turn of events, until they notice the gold watches, rings, and earrings the tourists are wearing...
A man offers the Bundy's $10,000 if Buck will breed with his champion dog, Lady Bird. So, Al has to coach Buck into knowing the varieties of breeding with other dogs the proper way. But needless to say it goes wrong and Al is stuck with the bill. Meanwhile, Kelly becomes Bud's fashion counselor and dresses him up in medieval costumes.
Marcy and Jefferson announce that they are expecting a baby, sending Al into pearls of laughter saying that it's the end of Jefferson's life, until Peggy announces the same. Al begins to lose his hair at an accelerated rate, thinking it's the end of the world for him. Kelly and Bud aren't pleased with the news either and take it out on Al.
Peggy and Marcy's constant demands for belly rubbing and expensive baby accessories drive Al crazy, prompting him to make a run for it. He and Jefferson end up at a bar connected to the bus station and watch semi-nude dancing girls while talking about a new and better life without their wives.
When Al unearths his father's old hammer, he decides to turn the garage into his own private room to escape his pregnant wife. All goes well, until Jefferson and the guys crash in. Even worse, it's only a matter of time before their own pregnant spouses find out.
Kelly earns a quick $1,000 at hustling pool to buy a gown for the local Miss Cheese competition, and a suspicious Al is out for blood, mistakenly thinking that Kelly is into prostitution. Al is then is out of blood when he sells his to get Kelly and manager Jefferson the money for a major pool game bet.
While Peggy is away helping Marcy recover her precious childhood belongings that Jefferson abandoned in a storage locker to be auctioned off in which he pocked and gambled away the money, Al, Kelly, and Bud hold an anti-baby meeting and makes plans for a new "Bundy World Order" that includes food, clean clothes and a huge hooter-ed oriental maid to replace the "pegzilla" Peggy.
After Al falls out of his bedroom window and passes out, he claims he saw God's shoes. He decides to make and sell these shoes in order to make it big. Jefferson wants to join in and invests in Al's project with Marcy's money.
Al finally gets cable TV installed in the Bundy household, but he cannot find anything good to watch. All that changes when Kelly, gibed out of an appearance on a public access TV by her modeling school teacher, gets her own talk show on the air with just $35 from her girlfriends. "Vital Social Issues N' Stuff With Kelly," features an all girl band and some of her friends discussing subjects such as "mens butts" and "the slut of the week."
Al, Kelly, and Bud travel to Hollywood after Kelly's talk show becomes a hit with the TV networks in which Al tries to get into show business with his lame TV show ideas, Bud tries to score with some of the actresses, and Kelly is happy to be a star.
Peggy sends Bud and Kelly to spy on Al at the shoe store for the day to confirm her suspicion that Al's recent giddiness is the work of an extramarital affair rather than Al's claim that he's only been flirting with a "shoe groupie" at the shoe store.