Clark is drawn to the state penitentery by one of the kryptonian crystals, which Lionel is using to switch bodies with Lex. Clark intervenes and Lionel enters his body instead. While Lionel uses his newfound super-powers to regain his lost fortune and alienate Clark's friend, Clark must convince his parents that he is the "real" Clark and reverse the processs, while avoiding murderous convicts.
When PETA demonstrates against the use of a cow as South Park Elementary’s mascot, the student body is forced to choose a new one. As the election approaches, Kyle tries to convince everyone that his candidate, a giant douche, is better than Cartman’s nominee, a turd sandwich.
When the roommates move in, Clara offends Foxxy after assuming she's the house servant.
24-year-old loner B.A. Jaye lives in a trailer park and sells souvenirs in Niagara Falls. Animal figurines and dolls speak to her and force her to interact with people and try to help them.
Bartlet orders a strike on the terrorist training camp as he and his staff broker a peace settlement between the Israelis and the Palestinians, but Bartlet and Leo realize that their differences over the peace settlement are irreconcilable, warranting a change in Leo's responsibilities. Having returned from Germany, Josh expresses concern about Leo's well-being, and his observations turn out to be well founded.
On the very night that he wins a D.J. competition, DJ Banner is found dead in an alleyway outside the club where the contest is being run, prompting Mac and Flack to investigate not only the club but also Banner's primary competition, who was jealous that his girlfriend's voice was part of Banner's act. Stella and Danny investigate the death of fashion designer Deborah Gayle, found face-down in the pool at her apartment by her assistant, who isn't concerned by her boss's demise. An autopsy reveals that the cause of death was poisoning by tetrodotoxin, a poison found in blowfish, which leads Stella and Danny to Fuqua Sushi.
When a plastic surgeon's greed and narcissism contribute to his failure to care for a patient that ultimately results in her death, Branch insists that McCoy prosecute him for criminally negligent homicide, rather than leave the matter to the civil courts, after an investigation reveals a several instances of the doctor's inattention to patient care.
A missing teenager found beaten and tied up in a college dormitory under construction claims that she was raped by three students, but as the investigation proceeds and information obtained by the police and the press causes her story to unravel quickly, the girl recants. Since Benson remains convinced that a rape did occur, the focus of the investigation shifts to the girl's overly-protective stepfather who has resisted the investigation from its onset.
After being shot outside a bar, Sipowicz discovers the identity of the person who's been harassing him.
Veronica tries to help her new boyfriend Troy find his father's stolen car and turns to Weevil for assistance, but the situation becomes dangerous when she discovers that Logan and Troy's buddy Luke might have left more than a piata in the car after their night out in Tijuana. While Keith has accepted that his wife is gone and begins dating school guidance counselor Rebecca James, Veronica continues to secretly investigate her mother's whereabouts, leading her to stumble on a secret Lianne Mars was keeping.
Lorelai and Sookie are thrilled when a cultural icon starts frequenting the Dragonfly Inn dining room. Rory discovers an intriguing secret society.
Emily and Florence visit a bridal shop to try on some very lady-like wedding dresses, Harvey demands "Bitty" in a restaurant, Bubbles De Vere singes herself while evading capture, Andy sees off Lou's new girlfriend, Sebastian meets his match in Marvin the US President's political aide, Dafydd decides to start a gay stall at the village fête, Vicky Pollard goes roller-skating in a pink string bikini, and Judy and Maggie are soon sick of Blake's 7 star Paul Darrow.
When Molly takes a job at a different city, she and J.D. end up having a night of kissing, and he tries to rush to sleep with her before she leaves. Dr. Cox goes on ambulance duty with a maniac, who he eventually finds out is a woman who has lost her son to an accident.
The spies are sent to investigate the unusual fall of very large, very fast meteorites around the world, which leads them to a villain who has the technology to ""throw"" meteorites down to earth. The spies have to stop her and most importantly the ""big one"" -- a huge meteorite launched at top speed toward L.A. In a b-story, Jerry, concerned about the spies' newfound freedom, hires a WOOHP nanny to keep an eye on them.
NCIS discovers that an area in the Marine's bombing range is where mafia has been dumping the bodies for a while. One of the victims is an undercover FBI agent. The team sets out to find a mole.
Despite everything that transpired between them, Craig and Ashley start to develop a friendship. Craig clashes with his band when he suggests Ashley become their new member. Hazel brings Paige along to a yoga class taught by Mr. Oleander, the hot new teaching assistant.
Kyle wants to be Cinderella for Halloween. Jim is against it because he thinks he's growing up to be a sissy. Jim buys Kyle a manly costume (a dinosaur) but Kyle changes back into the dress. Jim, Andy, and Kyle all sit on the couch, Jim and Kyle persistent. Jim goes in the kitchen, sees an older Kyle who convinces Jim to let Kyle go as Cinderella. In the end, they all go as ladies and they trick-or-treat.
After Dare Night resulted in new arrangements, a midnight meteor shower finds Lucas sharing a romantic night with Anna. Andy surprises Karen with a dinner and Keith cooks for Jules on their first date. Brooke finds herself forming a mutually beneficial relationship with Felix, and Peyton sets out to find an opening act for her club.
Lacey's birthday party is ruined when her deepest fear reveals itself. But then it turns out everyone in town has their own unique fears. Everyone that is except Wanda. So Brent and Hank make it their mission to figure out what freaks her out. Meanwhile, Oscar tries to prove to Emma that he can cook which unexpectedly leads to illicit meetings with Karen. And Hank and Lacey both prove to be pretty bad liars.