Man's best friend isn't a dog, at least in Carl's eyes, when a stray pooch follows the kids home. Carl wants to get rid of the dog, but his feelings begin to change when the dog scares off unwelcome visitor Urkel. Carl soon becomes attached to the dog, but it isn't long before the canine disrupts the family routine.
Carl's lemon tarts - made using a secret recipe - is a big hit with Rachel's church group. One of her friends is a restaurant manager who wants to buy dozens of the tarts. Carl agrees to turn the kitchen into a makeshift bakery ... and with less than 24 hours to fulfill the contract, the results are disastrous.
Carl leaves Eddie in charge of the household while the adults go on an overnight trip. There's one major rule: No guests allowed! Eddie obeys at first, but then Rodney comes over to deliver pizza. Then two pretty girls show up ... and things quickly spiral into a huge house party that Eddie quickly loses control over. Rival football players even play football with Urkel! Only when Carl and Harriette arrive home early does everything calm down ... that is, until Urkel utters from inside the sofa, "Party of the year!"
Eddie's flunking algebra and has nowhere else to turn but math-whiz Urkel. Urkel agrees to help Edd-o on one condition: He gets a date with Laura. And just so he'll get what he wants, he takes Eddie's Prince concert tickets for collateral. Laura reluctantly agrees to go with Urkel on a "non-date," which goes just as one would expect. In the end, Harriette assures Laura that Urkel is well satisfied - and then the phone rings!
Seeking a promotion, Carl invites no-nonsense Capt. Davenport over for dinner. Simple enough, except he doesn't know that Laura - who has opened a baby-sitting service - is looking after dozens of crazy children. Carl is sure his promotion (not to mention job) is down the drain, especially when Capt. Davenport is a little tied up thanks to the kids. But things turn out OK when Capt. Davenport moans, "You ruined the game" and admits he loves children.
A bully named Bull Watson terrorizes Urkel into giving up his lunch money. Urkel wants Eddie to stick up for him, but gets no sympathy. That is, Rodney witnesses Urkel sticking up for himself and Bull threatening the much smaller nerd with serious injury if he refuses to hand over his lunch money. After going to Carl for some advice, Eddie decides to fight Bull ... and easily defeats him.
Eddie is persuaded to run for class president vs. Margie Flatman. Rodney - and later, Laura - decide that a campaign of style is better than substance, but Eddie eventually sees that Margie is simply more qualified for the job than he is and drops out.
It's the guys (don't forget Urkel) vs. the gals in grudge match at the bowling alley. The usual hijinks ensue, and a huge argument breaks out. Then a severe thunderstorm knocks out the power, and Estelle later points out that it was God calling everyone to their senses.
Eddie wants to make a rock video for a TV contest, but finds himself in a bind when his band deserts him. No wonder, Harriette points out: "That was a love letter from Eddie Winslow, to Eddie Winslow!" Eddie decides he needs to change his narcissistic attitude and recruits Urkel and his family to make a rock video ("We Are a Family") that everyone can be proud of.
Laura and Urkel are employees at Leroy's, the local hamburger hangout. Urkel decides to cook Laura dinner, but the klutzy nerd winds up burning down the restaurant. Leroy - exasperated once and for all at Urkel's unending clumsiness - decides to take the insurance settlement and get out of the restaurant business, but Rachel finds the opportunity of a lifetime in the burned-out rubble.
Rachel opens up Rachel's Place, the new teen hangout (in place of the burned-out Leroy's). She also has her eye on her loan officer, Steve Webster, then begins talking about him around the house. Urkel overhears Rachel's conversation about treating Webster to a candlelight dinner ... and jumps to the conclusion that Rachel has her eye on him (even though he's a nerd and about 30 years younger). Urkel dons his best threads, and although Rachel is flattered, she finds she needs to clear up this misunderstanding.
The subject in home economics class at school: marriage. Laura wants to be paired with any number of cute guys in her class for a project about marriage ... but winds up with Urkel instead. Urkel goes above and beyond what it takes to be a good husband, but winds up angering Laura when she feels smothered by his constant attention. Laura asks for some sympathy from her mother, but Harriette just wishes Carl would pay half as much attention to her as Urkel does Laura.
Carl's dealing with a back that's killing him, and a rival officer named Charlie who has a monster ego. So when the precinct's annual dance contest approaches, Carl and partner Harriette decide to teach Charlie a lesson or two in humility.
An unlicensed Eddie wants to impress girlfriend Jolene with his driving skills ... and winds up crashing the car through the front of the house! When Carl demands an explanation, Urkel takes the fall. The nerd's parents are so outraged that they decide to send him off to military school. Will Urkel get to finish giving Laura his classic farewell speech before Eddie admits what really happened?
Carl wants Eddie to come along on a ride-along program, but the younger Winslow is more interested in girls, singing rock songs and modeling. Carl's disappointment turns to dismay when Urkel gladly volunteers to ride along. Urkel (of course) unwittingly does everything to make Carl's job frustrating, then disobeys his orders to stay in the car while Carl is staking out a robbery suspect in a stockyard. Carl and Urkel find themselves locked in a boxcar ... which gives them ample opportunity to learn about each other and time for Carl to realize Eddie isn't quite ready ...
A Halloween costume-bedecked Urkel and Laura are hostages during a bank robbery. Urkel fantasizes about saving Laura and subduing the criminal, but things don't quite work out that way. Carl, meanwhile, is able to apprehend the subject, leaving a downtrodden Urkel to realize he can never impress Laura by being a hero who saves the day.
To get Urkel off her back, Laura directs the nerd to a shy, withdrawn classmate named Susie. Urkel's magic touch gets Susie out of her shell, prompting him into fantasy land when he dreams he's Chicago's newest Cassanova and has girls fawning all over him. But Urkel decides that, although Susie is very nice, Laura is the one he really wants. Meanwhile, Carl fails to notice the obvious about a seductive new neighbor named Loretta ... that is, until she gives him a pair of musical underwear and suggests he demonstrate them.
Laura enlists Urkel's help for a science project, despite Estelle's stern warnings against it. Laura falls asleep and has the weirdest dream: Urkel made an atomic bomb ... and sets it off, blowing Chicago off the map.
School bully Willie Fuffner has his eye on Laura, who wants nothing to do with the guy that is intimidating others, including Greg, the guy Laura really wants - to the dating sidelines. Urkel tries to stick up for Laura, but Willie takes sadistic pleasure in beating back the nerd. The two get into a fight at school and the gym teacher decides that - instead of referring them to the principal - they should fight it out in the boxing ring! Carl gives Urkel a few pointers, but gets plenty of black eyes instead. On fight day, Urkel holds his own ... temporarily. Just when...
Eddie, Rodney and Urkel wander into an adults-only billiards hall, where a friendly yokel named Higgins decides to challenge Eddie to a friendly bet over a game of pool. Eddie quickly finds he's taking on a pool shark and loses a lot of money. Higgins warns him to pay up, or his family could suffer some brutal consequences. Eddie - who doesn't have the skills to match Higgins - decides instead to try to win back his bet and enlists Urkel to help him. Urkel is about to win when Higgins' cronies interfere; when Urkel complains about the cheating, the thugs decide to ...
Urkel's parents decide to leave him home alone for Christmas. The Winslows decide to extend some holiday spirit and invite their nerdy neighbor over on Christmas Eve. Everyone's shocked to learn Urkel still believes in Santa Claus, but who was it that delivered that Freddy Teddy that Richie's been wanting?