In his efforts to help Willis dethrone an arrogant video game champion at the local arcade, Arnold becomes hooked on video games.

When Kimberly transfers to public school, she causes Willis embarrassment by insulting the class president and trying out for the boy's swim team. Drummond hires a new housekeeper with an impressive resume.

Dudley, too shy to talk to Lisa, his love interest, turns to Arnold to help him woo her with poetry. However when the plan backfires, Arnold finds himself unable to get rid of Lisa, who is in love with him, and unable to talk to D...

Arnold, feeling sorry for a new boy at school who has no friends, asks Willis to serve as a big brother to him. When Willis begins spending all his time with his "new brother", Arnold feels neglected.

Willis steps in to mediate a feud between rival gangs, which has been intensifying. When the effort fails, Willis finds out his personal safety is in danger, so he decides to buy a gun, a move that could really exacerbate matters.

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Willis obtains a fake ID and dons a fake mustache to get into a nightclub. While at the club, he gets a date with a much older woman and spots Mr. Drummond on date with a much younger woman.

Arnold's campaign to be elected class president hits a low point when a picture that Kimberly took of him in the shower showing his bare behind is accidentally published in the newspaper.

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A run-in with the new landlord and his bullying son may cause Drummond and the family to be evicted.

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A man dressed as Santa Claus breaks into the apartment and steals gifts.

Fed up with living under Drummond's rules, Willis decides to move into an apartment with a friend whose dependence on alcohol is troubling.

Drummond lies to the kids about not being able to go on a family camping trip so he can spend a night of romance with his tax attorney.

Kimberly asserts her independence from her father by getting a job at a burger joint.

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Drummond and Mr. Ramsey learn the truth about Mr. Horton, the seemingly friendly bicycle shop owner with a very sinister side. It soon becomes a race against time to get details out of Arnold after learning that Dudley is about to...

Kimberly impresses professional skater Dorothy Hamill with her ice skating, and is taken under her wing. But Kimberly is overwhelmed by the hard work it takes to become a professional skater, and devises a way out.

Arnold, realizing that Kathy is struggling to fit in at public school, encourages her to become hall monitor. He quickly realizes that he has created a monster when she begins to take her job too literally.

Arnold becomes attached to a cricket that he believes is bringing him luck. Unfortunately, Drummond and Willis do not share the same warm feelings toward the cricket, which keeps them up at night.

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