After a riot breaks out at Clone High, Abe organizes a film festival to help students express themselves, while Principal Scudworth appeases the Secret Board of Shadowy Figures over dinner.
As plagues of various pests descend on Los Angeles, the beast Cordelia saw in her vision returns - and the apocalypse begins.
Larry figures out a way to fire a chef, and alienate an important restaurant critic, in the days before his new restaurant is scheduled to open. As Susie stews over a misunderstanding with Larry and Cheryl, the Davids spend some quality time at the car wash. With its grand opening at hand, the restaurant owners hire a new chef with a penchant for speaking his mind.
Sydney races to find a cure for Vaughn, but in order to find the antidote, Sydney must make a deal with Sark that could endanger Sloane's life. Meanwhile, Will continues his research for Vaughn and discovers some disturbing inconsistencies involving 20-year-old standardized IQ tests.
Paige gets to know the Whitelighter in her, when she meets her first charge, a man named Sam, unbeknownst to her is actually her real father. Meanwhile Cole tries every possible way to get himself vanquished by the Charmed Ones. Piper and Leo have problems in finding a magical creature that does the babysitting part, and things go bad to worse when they're poisoned by a Darklighter, leaving Sam as the only one who can save them.
Bender grows jealous when Fry attempts to clone Seymour, his beloved fossilized dog.
An accused molester's defense rattles Bobby, who's also unnerved by the reproach of a venerable priest; a case involving animal sacrifices embroils Ellenor.
While preparing for the city championships, JJ (Will Estes) discovers some of Philadelphia's police officers have offered his teammates money to throw the game (although Tommy denies it at first), forcing him to question their integrity, as well as that of his police officer uncle Pete who stops by the house for a sudden strategy session. Meanwhile, Meg (Brittany Snow) who shows signs of affection for Luke, a record store clerk at the Vinyl Crocodile and Patty's new piano teacher, is upset with Roxanne's sudden interest in him.Turns out Roxanne was only pretending to like him, long enough so Meg would get jealous and admit she liked him. Elsewhere, Helen leaves the family for a rare girls night out with new age classmate Rebecca. Meanwhile Jack (still saddled with the TV's from the busted hotel deal),prompted by Henry's suggestion, expands his customer base to include a few black customers and Sam deals with backlash from his former friends over the impending game.
The Simpsons buy a satellite television, which Bart spends so much time watching that he does not study for an important achievement test. He scores so low that Principal Skinner demotes him to third grade, while Lisa does so well that she is moved up to third grade. The two are placed in the same class and become rivals. During a trip to Capital City, they get separated from their class and are forced to help each other in order to find their classmates.
At therapy, Tony likens himself to the 'sad clown,' but Melfi doesn't buy into his melancholy portrait. Meanwhile, Carmela drags A.J. with her to Furio's house to offer decorating tips and companionship; Paulie puts the finishing touches on some free artwork; and Christopher finds himself at a crossroads.
Toby picks up some dangerous habits when he decides to join the school wrestling team to become popular; Terri's classmates learn that she works as a plus size model, and she considers ditching her job when she gets teased.
Connie's delinquent cousin captivates Bobby, who's oblivious when she turns their science project into a drug lab.
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.
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.
Foyle investigates a man found with a knife in his stomach in a bombed out building while son Andrew gets involved in a top secret radar program.
Fillmore's partner moves away to Tennessee, and he is partnered up with Brad Parnassus, the smartest kid at X Middle School. Rebellious and super-smart new student Ingrid Third doesn't take her introduction to X student body well at all, and a giant stink bomb soon explodes in the hallways.
Corrine's perfect record is put to the test when she has the worst day of her life. Everything starts when Josie unplugs her alarm clock, making her late for class and leading into a series of events gradually making the day worse at every turn. The worst part of it is that Corrine must do this all again tomorrow when the day keeps repeating itself. She must accept the fact that every day isn't perfect or be pulled down with her own personal neverending time loop.
Rogue begins to lose control of all the people she's ever absorbed as they fight to take over. She discovers unsettling information about Mystique. Scott and Jean go on a date... or do they?