Urkel narrates romantic vignettes featuring the Winslows and friends.
Just as crestfallen Cory gives up hope of seeing Topanga again, she shows up.
As Sabrina and Harvey grow closer, her aunts reveal that when a witch kisses a mortal for the first time, the mortal turns into a frog. Unable to stop herself, however, Sabrina kisses Harvey, and must find a way to change him back.
The value of the greatest of joys -- a healthy baby -- becomes evident after chemical warfare leaves humanity unable to produce normal offspring. Those rare couples like Sherry and Tim who do conceive a normal child become the focus of intense government attention as desperate officials seek a cure. Held captive in a secret maternity hospital run by Dr. Royce, Tim and Sherry realize the panic-stricken government plans to make their beautiful new-born daughter a permanent ward of the state.
Beavis and Butt-Head go to a lingerie store. There, they touch all of the underwear on sale, thinking it means they'll "sort-of score" since women will wear them someday.
Martin and the gang go on a cruise, which Gina accidentally misses. He later meets a beautiful woman named Ellen who he believes is contemplating suicide. But after a talk with Martin, decides not to kill herself, and begins to develop a romantic interest in him. Tommy and Pam try to just be friends, but their friendship is tested after Tommy meets another beautiful woman. Later that night, stowaway Cole accompanies Pam to the bar, where they begin to drink heavily. The next day Pam wakes up in bed next to Cole and believes that they have slept together. Meanwhile, Martin is awakened by a knock on the door, and finds a half dressed Ellen has come to his stateroom to pay him a visit.
Martin and the gang are on a cruise ship with The Love Boat characters. Martin is doomed to finish the trip without Gina, who missed the boat, and is stalked by a suicidal temptress. Tommy thinks that Pam is suddenly interested in Cole, after finding them in bed together.
Nurse Carol Hathaway is held hostage during a convenience store robbery, then befriends one of the gunmen.
Wanting more time to focus on her new job, Rachel suggests that she and Ross take a break from their relationship. Ross later seeks solace at a party. Phoebe dates a diplomat who needs an interpreter to communicate with her. Chandler and Joey ponder a ménage a trois with a woman who seems hot for both of them.
Kramer becomes the spokesman for a woman George wants to avoid; Jerry's bookie welches; a co-worker mistakes Elaine for someone else, who's reported as a problem worker.
Jonny and Benton venture into Jessie's mind to undo Surd's malicious attempt to strike at the Quest team from within - but it turns out that Jessie can take care of herself.
The detectives have to prove that a Gulf War veteran has stolen missles. Williams meets with G's french teacher about G's crush on her.
Mark aids an old friend, Joe Mannix, in solving a 25-year-old, unsolved murder.
Third-graders invade WNYX at the same time some very adult reading material begins popping up around the office.
On Valentine's Day, Tia and Roger are mysteriously struck by Cupid's arrow, which leaves Tamera feeling alone and brokenhearted. Meanwhile, Ray participates in a charity bachelor auction, where his plans to earn the most money backfire.
When Doris invites the whole gang to spend Valentine's Day weekend at a ski resort she's thinking about buying, Hayden helps Christine conquer her fear of the slopes. Meanwhile, Dauber runs into his ex-fiancée Judy, which stirs some unresolved feelings. The gang heads off to a ski resort, where Hayden and Christine go their separate ways after an argument and Dauber spends his time trying to hide from Judy after spotting her in a grocery store.
Ellen misinterprets the signs of a handsome deaf actor, and Spence gets his signals mixed when Paige's former fiance returns to the scene.