Fearing contagion, the Clone High community turns on Gandhi when he is diagnosed with ADHD, which means Abe has to choose between pleasing Cleo and standing up for his best friend.
Lorne's spell to restore Cordelia's memory backfires and convinces everyone they're high school students who have been gathered to kill a vampire: Angel.
Foyle investigates the suicide of a pacifist and death threats to the judge who ruled against his conscientious objector status.
Larry proves himself an unskilled Christmas tipper, while both Larry and Jeff prove incompetent at creating believable alibis for the messes they get in. After offending his housekeeper, Larry makes amends with her at the expense of his wife. Later, Larry attempts to reconcile with Cheryl's family after ruining their nativity scene.
Sydney's trust in her father begins to fade. Meanwhile, Sydney and Vaughn may have been exposed to a deadly virus while in Taipei; Sloane haunted by Emily's death begins to unravel. Vaughn enlists Will to help research a case.
When Phoebe must constantly save the life of her new boyfriend, a warlock shows up from the future, claiming that future Cole sent him in order to kill the boyfriend before Phoebe's dies instead. However, present Cole cannot allow this and tries to help the sisters protect Miles, but when the warlock decides to work on his own agenda, by stealing the Book of Shadows, it results in the death of two of the Halliwell sisters. The survivor must decide whether going back to change the past is the right thing to do.
When Earth is jeopardized by global warming, the crew attends a conference in Kyoto hosted by Al Gore's head.
High school's first day vexes Malcolm, who acquires an unfortunate nickname; and Hal, a parental "volunteer" running afoul of authority.
The detectives investigate a triple murder, including the son and daughter of a wealthy businessman, that occurred in his apartment. After investigating the childrens' stepmother (his second wife), they turn to a pair of nannies, one of whom works for the family. However, the detectives must reach back to the nannies' history as children, and a television soap opera, in order to better understand the motives for the crime.
Paige Terri and Ashley reunite in Degrassi's hottest band. Ashley is noticing a diffrent Paige like something is wrong with paige and tries to see what's going on. When the song they sing talks about rape Paige gets mad. Will Ashley find out what is really going on with Paige? JT wants revenge against Liberty a girl who makes fun of him in Class.
A competitive eating groupie encourages Bill to enter a hot dog eating contest.
A sexual-abuse case involving victims of a former priest embroils Eugene; a nuisance suit filed by ex-lovers escalates into violence that rattles an already shaky Lindsay.
Having been handed a case about an infamous convict, the team tries to get closer to the convict through his partner, who is deaf.
Meg is angered to hear Luke, the new record shop employee, talking bad about the music she's about to buy. Elsewhere, a sudden cancellation of his deal to supply a hotel with all there new TV's, forces Jack to examine his family's financial outlook and question his own business philosophy. Sam, who is still adapting to life at East Catholic high school deals with a prank gone too far by the football team, while JJ looks on, unable or unwilling to intervene. While Roxanne uses her Bandstand connections to start her own business of selling autographed 45's, starting with Marvin Gaye. Discovering Luke slipped her a Bob Dylan record instead, Meg rushes back to the store to conmfront him. The Prank gets Tommy suspended and he threatens Sam until J.J. intervenes, which draws a nasty response from Sam. Michael shuts down Roxanne's new business, while Jack tries in vain to still make the big Hotel sell, but it's all for not as Mr. Healey refuses to buy them. Lastly, the bitter cold of the nigh
Duappy, a virtual pet kept alive the longest, has been stolen, and it is up to Fillmore and Ingrid to find X's pride and joy before a reporter comes to X to do a story on Duappy and before Duappy dies.
Wanda receives a clue from one of Magneto's minions, Pyro, directing her to a ski resort. Meanwhile, Kurt is meeting Amanda's parents for the first time, and the Toad believes he can use Kurt's holo-inducer to disguise himself and win Wanda's love.
When the present is altered, the Justice League must travel back in time to World War II to restore history.
Wonder Woman and Steve Trevor survive the attack and trick the Germans into believing that the communicator was destroyed. GL and Easy Co. find the runaway and discover that Vandal Savage plans to use jet aircraft to invade America. GL boards and tries to stop Vandal's plane while Hawkgirl, Superman, and Flash try to intercept the flight with J'onn's help. With the aid of the Blackhawks and Flash notifying the U.S. Navy, the German flight is shot down and Vandal apparently is killed. The JLA return to the present to find everything restored and Wonder Woman visits a now elderly Steve Trevor in the restored present.