Carl drags Eddie along on an ice fishing trip to Lake Wannamuck. Tempers are already on thin ice between the two Winslow men, and their patience grows even shorter when Urkel shows up (and promptly becomes an ace at fishing). But the nerd saves the day when Carl falls through the ice, making a shaken Eddie realize that he easily might no longer have had a father to argue with had things turned out differently. Meanwhile, Judy is upset that Richie is being lavished with attention.
What promises to be an ugly father-son feud escalates into a huge quarrel over house rules between Carl and Eddie. When Carl threatens to ground Eddie, the younger Winslow decides he doesn't have to take any more and plans to move out. Harriette decides to mediate the feud and settle both of them down before something really bad happens.
Carl and Urkel struggle with their consciences in separate situations. Carl finds a diamond necklace that looks like the one he always wanted to give Harriette, but knows it might belong to someone; Urkel is asked to tutor Laura's current boyfriend, Todd, who is struggling to maintain his academic eligibility and remain eligible to date the lovely Winslow girl.
With Rachel's help, Harriette wins a radio call-in contest and nabs the grand prize: a new car. But just who deserves the car more becomes a major sore point between the sisters, leading to a huge argument. Carl isn't there to intervene; the acrophobic Winslow - the butt of jokes at the precinct when he was unable to foil a robbery because of his fear of heights - finds himself in the worst possible situation, thanks to Urkel: high in the sky in a hot-air balloon, with no way to get down. However, Carl is able to save the day when Urkel nearly falls out of the balloon.
At Maxine's rooftop party, Urkel shows everyone how to "Do the Urkel." But it may be his last hurrah; Willie Fuffner, his pride still stung from losing to the nerd during a boxing match several weeks earlier, offers Urkel a peace offering - a glass of punch. Only he doesn't tell him it's spiked with whiskey. A drunken Urkel staggers around the rooftop, which is good for a few yuks ... until he tumbles off the side of the roof and finds himself clinging to a clothesline for dear life. Rachel manages to save the day, and Willie and his buddy, the dim-witted Waldo Faldo,...
For the second time in a matter of weeks, Eddie's unlicensed driving (all to impress the chicks) gets him in trouble again when he dents the family car. Eddie knows he'll be in hot water if Carl finds out, but Urkel's suggestion - visiting Ma's Bakery, which is the front for an underground casino - could land him in even deeper trouble.
During Black History Month, Laura and Urkel hope their fellow students will gain appreciation for other cultures and races with a new class. But all they get is a bunch of threats from a few racist classmates. Laura breaks down in tears and feels sorry for herself, but Estelle's story behind her first library card gives her new inspiration.
Rachel tells Richie and Judy stories about Carl and Eddie to teach a lesson about taking credit. Carl and Lt. Murtaugh are involved in an operative to uncover a smuggling ring. Even though Murtaugh nearly blows the undercover scheme, Carl is able to take the criminals into custody and gives his partner credit for setting up the sting. Meanwhile, Eddie struggles with a writing assignment in class and turns to Urkel for help. Urkel ghost writes a really great story and Eddie is ready to take the credit ... until he is asked to produce more stories.
An elderly man named Jimmy visits the Winslows, claiming to be the family's long-lost friend. But the shock really sets in when Harriette and Rachel realize that Jimmy is actually their estranged father.
Carl is hoping to get a promotion, but it may ride on Lt. Murtaugh's influence - and his ability to get the smart-mouthed lieutenant a date with a less-than-willing Rachel, who is already fed up with his borderline sexual harassment.
Carl - embroiled in a dispute with Urkel's father - has a dream about he, his family and Urkel living in the Old West. There, the dispute over a compost heap - this time, with Two-Gun Urkel, the most annoying gunslinger in the West - grows heated and results in a shoot-out. Urkel loses, and everyone refuses to accept Carl's plea for forgiveness.
Carl's irate demeanor has everything to do with the fast-approaching one-year anniversary of a hostage situation gone horribly wrong. He is still shaken over not doing that one thing that could have stopped a convenience store robber from killing his elderly hostage. A chance meeting with the victim's widow - she had sent her husband out for ice cream on the night of his death - helps Carl realize that nobody (except the robber) is at fault for her husband's tragic death.
Urkel befriends Lowell, an orangutan who has been abused through a series of laboratory experiments. At the precinct, Carl is exercising on a treadmill when he discovers it has been booby-trapped by a revenge seeker; the bomb hidden inside will go off should he step off the treadmill. He must rely on Lt. Murtaugh - and a little bit of luck - to disconnect the bomb's wiring before it explodes.
It's brains vs. brawn in a rope-climbing contest, as scrawny Urkel competes against loud-mouthed jock Alex for the rights to capture Laura's affections. Urkel knows he can't win the conventional way, so he devises a jet pack to help ensure his victory.
Laura wins the female lead role in the school production of "Romeo and Juliet," and looks forward to the kissing scene with her Romeo, Daniel Wallace. Then Daniel falls ill and the understudy - who else but Urkel - takes his place. Thanks to Urkel's clumsiness and being himself, the play turns out to be a disaster.
Urkel repeatedly sleepwalks into the Winslows' bedroom to belt Carl over the head with a newspaper. Harriette gets an annoyed Carl to call over a hypnotist to see what's behind Urkel's behavior ... and Harriette is more than a little disturbed by the findings. Turns out Carl had yelled at him after the nerd accidentally broke his ship-in-a-bottle, then - unaware that he was listening in - told Laura he wished he'd go away for good. Carl eventually realizes he needs to apologize.
It's a case of puppy love for Laura when she falls head over heels for Carl's new rookie partner, Officer Mike Doyle. Carl's remarks about Laura playing grown-up - in front of Mike - don't go over too well.
Urkel annoys Carl with his prized Peruvian beetle. The bug gets loose and a spooked Carl kills it, to Urkel's horror. When Carl refuses to pay for the expensive bug, Urkel decides to see if a television small claims court judge agrees that it was more than "just a stupid bug."
Urkel creates a robot named after himself. But the robot soon develops a mind of its own and - after trapping its inventor in the closet - poses as the nerd and invites Laura over ... so it can have her all to itself.
Urkel and Laura are in the same boat as equipment manager for the basketball team and underclassman cheerleader, respectively. Urkel's talents on the court seem to go unnoticed by the coach ... until he is the only available team member left who hasn't become injured or fouled out; he winds up being instrumental in his team's winning rally. In Laura's case, she has to deal with snotty team captain Cassie Lynn, who insists on running the squad her way, even though her clichéd cheers aren't going over too well. Laura's cheers, however, really spark some crowd enthusiasm.
A street gang named the Dragons begin causing trouble at Rachel's Place, breaking things and sexually harassing employees; Carl arrives just in time to chase them out. That night, after closing time, the gang breaks in and heavily vandalizes the teen hangout. Everyone's anger grows when a bruised and bloodied Eddie arrives, announcing he was ambushed by the Dragons' gang members. Carl wants to take matters into his own hands, but Urkel reminds him that if he were to do that, he'd only destroy much more than his career. Urkel eventually agrees to go undercover as a ...
Urkel tutors a pretty girl named Vonda, a girl whom Eddie is looking forward to asking out. When she passes a test, Vonda comes on to the nerd, prompting him to conclude she has an easy reputation. Urkel helps set her straight, which is good for her ... but definitely not what Eddie was hoping for. Meanwhile, Carl is the butt of Lt. Murtaugh's jokes when he is asked to wear drag for a drug sting.
Urkel tries to tell Laura that potential boyfriend Daniel Wallace is bad news. Thinking his attempts to meddle in her life have risen to a new level, Laura tells Urkel never to speak to him again. Harriette finds out and warns Laura that she may not only regret her words, but that she'll surely grow "old and alone." That night, Laura has a dream whereby she is an elderly spinster while 90-year-old Urkel is married to a beautiful woman.
Urkel joins in on Carl's poker night, only for Lt. Murtaugh to take quick advantage and clean out the nerd. Eventually, Urkel gets his revenge by cleaning out the hustling, loud-mouthed lieutenant. Meanwhile, Harriette offers to help understaffed Rachel at Rachel's Place, but Rachel takes her sister's well-meant suggestions the wrong way.
Rachel becomes choir director at her church and soon drives everyone crazy with her micromanagement. She also unknowingly tests recent born-again Christian Urkel's faith when he wants to join the choir, despite his (decidedly) off-key vocal abilities. Estelle eventually sets Rachel straight