In this episode paying tribute to the Big Brothers Big Sisters of America program, Urkel is paired with a streetwise youth named 3J, whose smart mouth is the cover for an embarrassing secret: He can't read. Urkel vows to help 3J learn how to read and discover the worlds that are opened up through books.

While Urkel is working on a cloning experiment with his transformation chamber, the contraption goes kablooey. The aftermath has Urkel cloned, creating double trouble for the Winslow household! Laura decides to make lemons out of lemonade and suggests that one of the clones be made into a permanent Stefan.

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.

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.

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

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.

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.

Steve's latest invention accidentally gives him the ability to read minds- thinking it will be a good thing & change the whole world- until the Winslows feel that their privacy is invaded- including Laura- when Steve learns she's been attracted to him. Meanwhile, Carl becomes a troop leader for Richie, 3J and the Junior Woodsmen.

Today is Halloween and Steve plans to spend a nice, quiet one with his friend, Laura. Unfortunately, Stevil, his evil ventriloquist dummy, is back with a vengeance with Steve's ex-girlfriend, Myra's, help in putting him back together. This time he's not alone. His sidekick, Carlsbad, is going to help him try to take over Steve and Carl's souls and place them into their dummy forms while they pose as the real Steve and Carl. Can Steve and Carl stop them before they wreak havoc in the Winslow House?

Steve's gangster cousin, Cornelius aka OGD decides to hide out in the Winslow house to avoid Fresh Squeeze.

Urkel and the Winslows get jobs at the mall for during the holidays.

Steve convinces Mr. Tanaka (Pat Morita), the owner of a Japanese restaurant, to teach him how to cook Japanese food. Feathers fly when Carl cares for his boss' beloved, but stubborn, parrot.

After breaking up a few fights between Myrtle and Greta, Laura decides that both of them should fight it out in a boxing match for Eddie's love. Meanwhile, Steve and Carl helps 3J locate his birth mother in a diner three blocks off Chicago. She was happy that he's living in a new family who loves him. She explains to him why she gave 3J up for adoption.

Steve and Laura attend the biggest polka festival in all of Chicago. She is surprised and impressed by how much he has contributed to the community through polka music. She loves him even more and enjoys herself there. Meanwhile, Eddie buys a new apartment for him and Greta to live in. Carl comes over to visit him and overstays his welcome by embarrassing him.

As Steve and Laura discuss wedding plans for their guest seating arrangements, NASA comes calling and tells him that he'll go into space to test his anti-gravity invention. Later on, Myra refuses to take no for an answer and sneaks aboard the shuttle to convince Steve to stay with her and give up Laura right away. Meanwhile, Harriette is overly concerned with Eddie's safety, she has him transferred to being a meter maid.

With the space ship unable to return to Earth, it's up to Steve to save his fellow crewman by gently removing the satellite that got stuck to its side. Once successful, he brings the crew home. Meanwhile, Myra makes one last push to get Urkel to come back to her, by pretending to be his fiancee. The plan fails and she eventually gives up on her pursuit. During that time, Carl helps Harriette understand her son's need to be a police officer. Eddie's meter maid duty takes a dangerous turn.

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.

After breaking up a few fights between Myrtle and Greta, Laura decides that both of them should fight it out in a boxing match for Eddie's love. Meanwhile, Steve and Carl helps 3J locate his birth mother in a diner three blocks off Chicago. She was happy that he's living in a new family who loves him. She explains to him why she gave 3J up for adoption.

In this episode paying tribute to the Big Brothers Big Sisters of America program, Urkel is paired with a streetwise youth named 3J, whose smart mouth is the cover for an embarrassing secret: He can't read. Urkel vows to help 3J learn how to read and discover the worlds that are opened up through books.

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

Steve's latest invention accidentally gives him the ability to read minds- thinking it will be a good thing & change the whole world- until the Winslows feel that their privacy is invaded- including Laura- when Steve learns she's been attracted to him. Meanwhile, Carl becomes a troop leader for Richie, 3J and the Junior Woodsmen.

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.

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