While in Chicago with their high school choir, Richie, Ralph and Potsie sneak by their chaperons, wind up on the wrong side of an unsympathetic downtown nightclub owner, and win the sympathy of a kind-hearted cocktail waitress.

Richie Cunningham's case of mononucleosis endangers more than just his health after the Fonz finds out who gave Richie the "kissing disease".

Richie lets fame go to his head when he takes a turn as a disc jockey at the local radio station.

Richie is called upon for a favor by an old friend from summer camp (possibly older than he),who is now the member of a successful rock and roll band called "Fish and The Fins". While they're in town he wants to use Richie's home for the band because they can't rehearse with groupies surrounding their hotel. He has to keep it quiet though. Before this,Richie already told people he knows leader, Rocky Rhodes, and has guaranteed his friends free concert tickets. Which end up being in the "rafters" so Richie's rep. is on the line! Will Rocky be able to redeem Richard's ...

Fonzie promises to provide the tuxedos Richie and the guys need for their formal gig at the stuffy local Leopard Lodge dance, but only if they let him join the band and play a bongo solo.

Ralph and Potsie let their imaginations run wild while they help Richie Cunningham fix a fence for a beautiful divorcée, especially after she asks Richie to have dinner with her when the job is done.

Richie gets an in for an interview with famous children's entertainers Bob Smith and Howdy Doody when little sister Joanie appears on the television show to present the popular puppet with the Chipmunk of the Year Award. But Richie is later confronted with an ethical dilemma after Life magazine offers to buy his one-of-a-kind photo of clown Clarabelle caught without his makeup.

Having to drive the Cunningham family car and a run-in with a gang stack the odds against Richie and his buddies after Bag Zombrowski challenges them to come up with dates by midnight or walk through popular Arnold's parking lot in their underwear.

Much to his dad's dismay, Richie defies Cunningham Republican tradition and campaigns for the Democrats during the 1956 Eisenhower-Stevenson presidential race.

With his parents out for the evening, home-alone Richie recovers from the Asiatic flu, waits for his friends to sneak him pizza and a movie, and surprises a burglar in the living room.

Howard Cunningham suspects that Fonzie's fiancée, Maureen, is really "The Lone Stripper", an exotic, masked dancer with a distinctive laugh.

Richie and Potsie plan to host a poker night at the Cunningham house as Howard and Marion will be out of town. However, their plans change when three young women stop by after their car breaks down, and Potsie invites them to stay the night.

The Cunningham family Christmas is all set but Richie finds out Fonzie (despite being popular) is alone this holiday. So, Richie decides to ask his folks to let him join them ...but will his folks or Fonzie accept?

Richie, Potsie, and Ralph need new uniforms for their baseball team and want to get a big celebrity to play the title role in their upcomming fundraiser production of Hamlet. When they can't get a big name to play the part, Fonzie agrees to do it.

As a game-show contestant, Richie wins $3200 before time runs out for that week's show. After the show, he is given an envelope by the show's host that contains the answer to the $5000 question.

Spike, Fonzie's little cousin, takes Joanie out on her first date. Richie and his date act as Joanie and Spike's chaperones and discover them missing at the movie theater.

Richie wins a date with a movie star, Cindy Shea, to a school dance, and Gloria breaks up with him because of circumstances surrounding it. Cindy, however, will only be able to meet up with Richie after the dance has started.

After experiencing a few strange happenings, Richie begins to buy into the legend that the place where their Halloween party is to be held, the old Simpson house, is haunted.

When the commanding officer of his high school ROTC group makes him squad leader, Richie finds that there's more to leadership than just shouting orders.

Shyness with a new girl, a bad James Dean impersonation and a book on abnormal psychology combine to make Richie think he should see a psychiatrist.

Regretfully remembering his dismal date with Arlene Nestrock before her family moved to New York, Richie does a successful do-over when she comes back three years later and winds up going steady before he's ready.

Howard Cunningham agrees to buy one of Fonzie's overhauled dragsters as a second family car but Richie soon discovers that its red color may not be the only reason that the hotrod's hot.

Richie feels that he doesn't have enough privacy, so he decides to move in with Chuck. He quickly discovers, though, that bachelor life isn't quite what he expected it to be.