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.
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.
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.
Richie scoffs at kid sister Joanie's fear of the haunted Simpson house until he gets a glimpse of a ghostly figure inside one of its cobwebbed closets.
When 12-year-old Joanie Cunningham is invited by Fonzie's leather-clad nephew, Spike, to go to a movie on her first real date, her parents and big brother Richie do what they do best ...worry!
Fonzie plays Hamlet from the heart and puts "cool" in culture when Richie asks him to play the doomed Danish Prince in the annual Shakespeare festival play.
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?
While Fonzie fixes their crippled car, Potsie convinces three stranded teen beauties to overnight at the Cunninghams while Richie's parents are out of town.
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.
Much to his dad's dismay, Richie defies Cunningham Republican tradition and campaigns for the Democrats during the 1956 Eisenhower-Stevenson presidential race.
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.
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.
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.
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.
Richie is called upon for a favor by an old friend from summer camp who is now the member of a successful rock'n'roll band called "Fish and The Fins". While they're in town he wants to use Richie's house for the band because they can't rehearse with groupies surrounding their hotel, but he must keep it quiet. Richie has already told people that he knows the leader, Rocky Rhodes, and 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 reputation as an honest guy?
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.
