Steve, Stefan and the Winslow family spends a vacation at Paris with his Urk-Pad after accidentally sending Carl in place of cheese to his pen pal, Nicole. All is not well when they first arrive, Eddie accidentally damages the café that his parents were eating at and is forced to work there to pay off the damages. Then Nicole is blackmailed by her opportunist cousin, Gilbert to get the plans of the Urk-Pad. Meanwhile Stefan looks to Steve and asks him to help him build his family tree (per Laura's recommendation). The nerd not only helps him build his using the Urkel family tree, but he also admitted that he created Stefan for a lot of things he wanted to be in his life. Stefan admitted that he wasn't a smart guy, but does come close.

Stefan poses as a model for a French version of Coca-Cola and decided that modeling is his career choice. He makes his successful debut in the runway show. Meanwhile, Steve is taken with Nicole to Gilbert where he learns about her cousin's intentions to get filthy rich.

Steve is held hostage in the opera house and Glibert gives him an ultimatum, either build him an Urk Pad of his own or else. The nerd reluctantly gives in to his demands and builds him the Urk Pad of his own. He's upset with his pen pal for her involvement with her cousin and her betrayal of her word to keep his invention discreet. Then Nicole reveals that she is sorry for what she did and explains why Gilbert has been blackmailing her for some time. He wanted to make a fortune off Steve's invention and will stop at nothing to get his own way. After that, she warns him that when the pad is complete her cousin and his gang will kill him. Steve completes the pad on time and teleport to the hotel to enlist Carl's help to stop Gilbert. Meanwhile, Stefan decides that he needs to go to Milan to pursue his career. Eddie is finally able to talk to the French girl that he likes.

Steve finally attends the college he wants to go to MIT and fits in very well there. Quickly, he starts missing Myra's company right away and transfers to her college to be with her.

When 3J goes missing from the orphanage, the Winslows tries to find him. They are unaware that Richie is secretly housing him in the attic and begs Steve not to tell anyone about it. The truth is later revealed by the nerd as he uses one of his devices and finds 3J in the attic. Carl and Harriete adopts him when they reveal that they care about his well being. Meanwhile, Laura starts dating around with Curtis to take her mind off of missing Stefan who is in Milan.

When Steve tells Eddie that Greta has been posing nude in his art class, he explodes in anger. He demands that she never poses nude again and she responds by not seeing him anymore. As he begins to miss Greta, Laura sets her idiot brother straight by telling him that her father gave her an ultimatum "Either stop seeing Eddie or Be cut off without a cent". She chose to keep dating him and she struggled ever since. Later on, he apologized to her for his yelling, not realizing why she taking the job as a nude model. Meanwhile, Nick and Carl's feud with each other takes a turn for the worst and it isn't long until Harriette sets them straight again.

A ventriloquist's dummy, which looks exactly like Urkel, comes to life and terrorizes the Winslows and Steve must stop it.

A street gang takes over the local park to deal drugs and play rap music, only to be confronted with 'Karate-Kid' variants of Urkel, Richie and 3J.

Steve has received six free tickets to see New Edition's Home Again tour because he knows Johnny Gill. He, Eddie and their dates attend with Laura to the concert. To their shock and excitement, New Edition, calls out Stefan onto the stage and she's excited to see him again. Meanwhile, Richie and 3J feel bad about having Carl and Harriette staying with them because they knew that they wanted to go to the concert. Both kids pull some strings with Steve to have New Edition perform at the house.

Eddie Winslow, after finding out Myrtle Urkel is rich, dreams that Big Daddy Urkel offers to pay Eddie $10 million to marry his daughter, Myrtle, at Urkel Oaks in Biloxi, Mississippi. His girlfriend, Greta is going to make sure that the wedding doesn't happen because she knows it's a farce.

Myra inadvertently sprinkles Urkel's mini fireworks on stuffed chickens she made for dinner in an effort to help Carl impress his boss.

Steve must prove a defendant innocent when he and Carl serve on a jury together.

Steve and Carl heads out into the woods to get a Christmas tree. The nerd annoys him by rejecting some of the trees until he snapped and tells him they are taking this tree. After they cut it, the were trying to hurry back before the snow got really heavy. Unfortunately, it obliterated their tracks and they end it lost. While sitting by the fire, Steve and Carl apologizes and bond. Then the nerd is able to use the constellation to get them home. Meanwhile, Eddie and the rest of the family are exchanging gifts until Harriette tells them Stefan is here. Laura finally calls it quits with Curtis and stays with her current boyfriend. Her ex-boyfriend angry and warns Urquelle if he hurts Laura in a matter he hates, he will pay for it. Stefan tells him that he won't hurt her in the emotional way that Curtis did.

While in college, Laura considers signing up with a sorority, but she has second thoughts after discovering that the group regularly harasses Steve.

Laura becomes involved in a love triangle between her, Curtis and Maxine.

When Steve transports Carl back in time, Carl learns a valuable lesson about priorities.

When Harriette finds contestants for the Miss Downtown Chicago Pageant, which a nervous Carl will be hosting with Emmanuel Lewis. Myrtle decides to cheat her way to win the pageant even if it means making Greta and the others look bad. She wants to win Eddie's love regardless of the consequences and Steve quickly cottons on to her plan. He helps free his girlfriend, Myra and the other contestants by freeing them from their imprisonment, back stage. As the angry contestants chases Myrtle around, he rightfully calls her out for being a manipulative, lying cheat. He tells the audience that Myrtle was using the pageant as a means to reaffirm her love for Eddie and will stop at nothing to get him, even if it's cheating. He reminds her that his friend will never ever love her the same way that he loves Greta. He tells her that it is extremely unacceptable and she knew the rules by hand. She chose to dismiss them and therefore, she loses by default. Myrtle is angry and embarrassed that Steve would dare disqualify her from the competition and leaves.

Urkel hosts three Valentine's Day stories. In "True Love," Eddie sings a song to clear up Greta's misunderstandings with his high-school ex-girlfriend Oneisha. "First Love" involves Richie and 3J vying for the affections of Kelsey Webster, Maxine's niece,when Richie decides to drop out, Kelsey decides that he's the better man. In "Lasting Love," Harriette accuses Carl of being cheap in buying her the same gifts every year and he enlists Richie and 3J to help him make up for it. Finally, Urkel gets his own Valentine's Day gift in the form of Myra dressed as a polka-costume-clad Cupid.

In order to win big on a game show, Eddie uses Urkel's transformation chamber to gain Urkel's smarts, only to have Urkel as an opponent.

Carl needs one more person for his poker-playing group. Harriette joins--and beats everyone. Meanwhile, in order to be a judge at a bikini contest, Eddie convinces Steve to temporarily replace him in his job as a peanut vendor at a football stadium. However, Steve causes so many mishaps that he is terminated--along with Eddie.

Urkel is insulted when Carl's home owner's insurance agent, Mr.Tolbert, calls him a disaster waiting to happen(due to his clumsiness). He won't put up for this and heads to his office in downtown Chicago. Steve tries to convince him that he isn't a disaster, and that he should lower Carl's skyrocketing home owner's insurance. However, it goes nowhere because Mr.Tolbert is still convinced that he's a disaster. That is until Carl shows up to his office and deals with the matter himself, by telling Steve that he's found a nice apartment on Argyle Street. Mr.Tolbert is completely mortified when he learns Urkel will be his next door neighbor and he agrees to lower Carl's home owner's insurance on the grounds that he keeps Steve away from him. Meanwhile, Eddie learns an important lesson that it's better to act your age and stay true to your current girlfriend when he's tempted to flirt with an older woman.

Steve's Aunt Oona from Altoona returns to visit her nephew and the Winslows again. Unfortunately, she's embarrassed about the extra weight she gained from eating so much. She's desperate to lose the extra weight to impress Reverend Fuller at church. Steve comes up with a solution for his favorite aunt, his fat compressing invention should do the trick. He isn't sure if it'll work 100% because he never tested it before, but Oona's determined to try it. She gets in and he starts the invention. It is a complete success as she steps out much slimmer than before. Carl is impressed by it and admits he should try it sometime. Like most of Steve's inventions, it eventually backfires and Oona reverts back to her overweight self. She runs out embarrassed by the whole thing and Steve makes a mental note to work on his fat compressing chamber more. Reverned Fuller makes a visit to the Winslow house and admitted to her that he like BBW - Big Beautiful Women.

Eddie and Steve also try to get 3,000 dollars in order to get a new laptop at the carnival will Eddie succeed?

Urkel and Carl travel back through time to the 1700s and wind up on a pirate ship where they're forced to walk the plank.