Christopher Lloyd adds to his gallery of eccentric characters, playing Hal's quirky, cranky and very wealthy father, Walter, in this rollicking episode. The occasion is a birthday celebration for the old man, but the snooty female in-laws seem more interested in offending Lois. Their shabby behavior initially goes unnoticed by Hal, who's desperately trying to bond with his self-centered dad; and by Dewey and Reese, who seek some of Grampa's dough by currying favor with him. But when Lois is reduced to tears after being excluded from a group photo, the family rallies to her side with an all-out counterattack that turns the party into pandemonium.

Paige learns more about her Whitelighter heritage, when she meets a man named Sam, who she doesn't realize is actually her biological father. Also, a suicidal Cole tries everything he can think of to get vanquished by the Charmed Ones, including allowing a Darklighter to poision Piper and Leo.

John gets jealous and lies to a friend who expresses interest in Chris by telling him that she is gay. Unfortunately, the man acts on John's information and sets Chris up with a lesbian acquaintance. Also, Bob tries to deepen his friendship with Jake and buys a pair of walkie-talkies so that the two of them can stay in constant contact with each other.

Tired of "suckling on the six network teat," with their endless array of "reality shows," the Simpson family gets a satellite dish. Homer and Bart spend hours surfing all of the available channels. While Lisa studies for the school's upcoming achievement test; Bart doesn't, as he engrossed in Japanese Friends amongst and other lame satellite TV programming. Bart zones out during the test and daydreams about everything he's been watching lately. At a school assembly the next day, Principal Skinner announces that because of Lisa's high test score, she is being promoted to the 3rd grade. When Bart makes a comment about Lisa, Principal Skinner responds by also announcing that because of his low test score, Bart is being demoted to the 3rd grade. They'll be in class together, much to each other's horror. Lisa has a hard time adapting to the 3rd grade, as Bart is coming off as a much better student than he actually is. They go on a field trip to Capital City and Bart and Lisa are put together via the buddy system. Their teacher, Mrs. McConnell, decides that the students are going to help the state design a new flag. When Bart overhears Lisa breaking bad on him, he redesigns their entry. Lisa's anger with Bart causes them to fight and miss their bus back home. Bart and Lisa attempt to get home on their own, meanwhile Principal Skinner reports their disappearance to Homer and Marge, who subsequently journey to Capital City to try to find them. Bart and Lisa encounter a family of mountain folk, who take them back to the big city to reunite them with their family. Realizing that the "status quo" is best all-around, Principal Skinner returns Bart and Lisa's academic careers to normal.

Connie's delinquent cousin, Tid Pao is staying with the family, due to some drug debts that she is hiding from back home. Bobby falls for her thug-life ways, and makes Connie jealous. When Bobby drops Connie as his science partner to be Tid Pao's, problems pop up. Unknown to Bobby, he helped Tid Pao make a meth lab for their science project. It is up to Connie to pull Bobby out of a big mess.

Sydney finds a cure for Vaughn, but to get it, she must make a deal with Sark, that may risk Sloane's life. Meanwhile, Will finds strange inconsistances in 20-year-old IQ tests

When Cordelia's apocalyptic nightmares become a reality, Angel, Wesley, Gunn and Lorne find themselves powerless against The Beast who has risen from the center of the Earth, bringing earthquakes and a rain of fire to Los Angeles. Bloodied and beaten, Angel and his friends realize that they may not be able to stop the impending doom.

The detectives are called to investigate the adult daughter of a retired officer which takes them to a case of terrorism involving someone she knew that includes a shipment of explosives.

Tony calls on Johnny Sack for help when his crew begins to question Ralph's sudden disappearance.
Tony forces Christopher into rehab when his drug use spins out of control, but group therapy soon deteriorates into a brawl.
Furio is noticeably cooler toward Carmela after his return from Italy.

Toby is tired of being the "geek" because the guys who are in sports get all the attention. Toby decides to go out for wrestling, but in order to join the team, Toby has to wrestle a guy in his weight class, which turns out to be Sean- the best wrestler in the school. Toby decides to take drastic measures to loose weight.

With the restaurant's opening at hand, Larry decides now is the time to fire the chef and aggrieve a popular restaurant critic. As Susie and Cheryl clash over misunderstandings and missed lunch dates, Larry finds a replacement chef with a colorful vocabulary.

Fry and Bender discover that the exact pizzeria Fry worked at before coming to the 30th century is on display as part of a 20th century exhibit at the Museum of Natural History. Fry is horrified when he sees his dog, Seymour, petrified among the artifacts in the exhibit. Fry reacts with protest and learns that there is a possibility to clone his 'best friend' back to life. Bender perceives Seymour as a threat to his friendship with Fry and gets his own Robo-puppy as competition.

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