Myra goes to Urkel's school for a visit, and later accuses Laura of trying to steal him away. An annoyed Laura tries to convince Myra otherwise, but things break down into a huge food fight. Meanwhile, Carl feels he has lost his romantic touch and invests in a toupee.
Laura oversleeps on the morning of a huge cheerleading competition in Cincinnati and gets Urkel to drive her there. When Laura causes the nerd's BMW Isetta to break down, the two are forced to share a hotel room. Normally in a situation like this, you'd think Urkel would take advantage of the situation, but he's the one that gets irked when Laura plays the blame game.
Carl nearly fatally shocks himself when he refuses to heed Urkel's advice to unplug a lamp while repairing it. Urkel is the only one who knows CPR and uses his knowledge to save Carl's life. Everyone then showers the nerd with gratitude, and Eddie, Laura and Waldo are inspired to learn CPR.
Harriette puts her job as head of security at the Chicago Chronicle on the line when she debates whether to cut her security staff as part of budget reductions. Meanwhile, Myra transfers to Urkel's school to be closer to him, and gets some ill advice from Eddie and Laura on how to capture the nerd's heart.
Eddie proves he has learned nothing from his past gambling experience and Bones pays him a visit. He gives the boy an ultimatum, "Pay the money or be crushed by him." He learns his lesson the hard way again when Carl finds out.
Harriette embarrasses Laura when she tries (a little too hard) to act hip and cool in front of her friends. Meanwhile, Waldo gets a job as a cashier at the Mighty Weenie, but Eddie might have to fire him when he does a bad job ... until he remembers Waldo's culinary skills are just perfect for an opening on his shift.
Eddie and Urkel become partners in a 2-on-2 basketball tournament ... that is, until Eddie dumps the nerd for a star player named "The Spider." Hell hath no fury like an Urkel spurned, as he turns to Grandmama to get revenge.
Urkel devises the ultimate plan to win Laura's heart ... a transformation chamber that will turn him into a suave, fashion-styling ladies man. Meet Stefan Urquelle, whom immediately melts Laura's heart. But Stefan is a little abrasive this first time out, and it isn't long before Laura misses the irksome Urkel.
Laura wants to buy a car, but car salesman Honest Bob exploits her lack of car-buying experience and acts very sexist toward her. Urkel suggests that Laura return to the dealership for another go-around, this time donning a fake mustache and wearing men's clothing.
Adventures at the drive-in theater, where Laura, Urkel and Waldo go with their respective steadies. Laura's boyfriend, Derek, refuses to accept "no" for an answer and eventually presses his luck, while Myra agrees (at least this time) to wait to have sex with her "Stevie-kins." Meanwhile, Maxine can only shake her head as Waldo acts like, well, Waldo.
Eddie decides to postpone college when R&B singer Shanice performs a song he wrote; the two share a duet later in this episode. Meanwhile, Urkel is feeling down when it seems no one has remembered his birthday.
When locker room wisecracker Jerry boasts about his latest sexual exploits, Urkel says he plans to wait ... just like best bud Eddie. Eddie is upset at this revelation, until Laura tells him that Jerry is not exactly as well liked among the girls as he claims to be.
Urkel's trip to rouge dentist Dr. Smiley (to reassure a scared Richie) takes a back seat to a terrifying racial profiling incident involving Eddie. He comes home claiming that a traffic stop for a turn signal violation turned out to be much more when the officers accuse him of being "a black person in a white person's neighborhood." Carl is certain Eddie is trying to cover up for more late-night carousing, but when he gets the other side of the story from the officers involved, he learns the whole ugly incident exactly matches Eddie's side. Carl is very angry and, ...
A huge explosion rocks the school's science lab, and accident prone Urkel is blamed. His academic future rides on defense attorney Laura's shoulders, but she must find a way to match wits with a rival student who is determined - too determined - to have Urkel expelled.
Urkel demonstrates his latest invention, snooze juice (a potion meant to allow police officers to easily apprehend criminals) at a professional wrestling event. When two wrestlers accidentally drink the potion and are unable to compete against the WWF's Bushwackers, the bloodthirsty tag team sets their sights on the nerd and Carl.
When Myra presents Urkel with a nude drawing of himself, the nerd tells her to get lost. A short time later, Urkel learns that Myra is going to a convent. Concluding she is becoming a nun because he yelled at her, Urkel convinces Eddie and Waldo to dress like nuns and go to the convent to stop Myra.
Urkel decides to renovate his Stefan Urquelle alter-ego, inventing a transformation chamber to do the trick. Stefan is much more likable this time, but just like the last time, the formula soon wears off and the suave ladies man is soon his old irksome, nerdy self. Urkel declares that he will find a way to make Stefan permanent ... and win Laura's heart once and for all.