Feeling Joanie and Chachi date too much, Howard offers to install a phone in her room but she can't see Chachi for 2 weeks first. She and Chachi try to find a way to get around this that may spell trouble.

Fonzie returns from Italy, with a beard, and excited about a new job. He'll be teaching mechanics at the High School. But he starts to lose his cool when his students are not as adept as he was at their age. With his students ready to quit his class, he starts to wonder if he has what it takes to be a teacher.

Lori-Beth bekommt Post von Richie, der im fernen Grönland stationiert ist und sie bittet, ihn zu heiraten. Doch er bekommt keinen Urlaub, und für eine Reise nach Grönland reicht das Geld nicht. Marion hat die rettende Idee: Sie geht in die TV-Sendung 'Träume werden wahr' und schildert die dramatische Liebesgeschichte. Sie gewinnt zwar - aber letztlich ist es Howard, der für das jungen Paar auf einen lang gehegten Wunsch verzichtet und so die Hochzeit ermöglicht .

Marions Neffe Roger zieht nach Milwaukee. Anders als geplant, fährt er direkt vom Flughafen zur Highschool, wo er arbeiten wird. Durch ein Missgeschick ergibt es sich, dass er seine Sachen in Fonzies Spint ablegt, der dort einen KFZ-Kurs anbietet. Eine heftige Prügelei löst das Problem wieder. Als sie sich später bei den Cunninghams begegnen, ist die Wiedersehensfreude nicht groß. Zudem bittet Marion ausgerechnet Fonzie, sich um Roger zu kümmern. Und das macht er dann auch .

After being refused permission to have a car, Joanie goes behind her parents back and gets one. She later finds it a very difficult secret to keep from Howard and Marion.

On a very snowy Christmas eve, Marion frets over Richie's absence, Fonzie and his friends are stuck in Al's restaurant, and Joanie uses the time spent snowbound with her dad in the hardware store to try to convince him to let her spend summer in New York City with Jenny Piccalo.

Auto shop teacher Fonzie campaigns to win the "TOTY", Jefferson High School's Teacher of The Year award.

Al gets some answers and a second chance to win the heart of Rosa Coletti twenty years after she left him for a tie salesman.

When the money he was saving to buy a new motorcycle is stolen, Fonzie instinctively suspects Al's shady new cook, Frankie.

Superstitious Fonzie would rather suffer from a toothache than admit he's afraid he may lose his cool-ness if the dentist should pull the tooth, until his pain interferes with his favorite past-time...kissing pretty girls!

After a trying day of doing favors for friends and an encounter with a blood-bank doctor, an under-the-weather Fonzie falls asleep on the Cunningham's couch while watching a horror movie and feverishly dreams that a mad scientist is after what makes him the Fonz...his cool!

Jealous Chachi sees red when girlfriend Joanie spends too much time practicing her kissing with co-star Granville Clark, the handsome actor hired to play the lead in the high-school musical.

Dressed as a bride and groom at the Jefferson High masquerade party held aboard a boat cruising Lake Michigan, Jennie Piccolo and Fonzie both say "I Do" in a wedding skit performed by their drunk host, Captain Singer, unaware that a ceremony performed at sea by a bona fide ship's captain may be the real deal.

Under pressure from cousin Fonzie, Chachi invites Joanie and her parents to his house for dinner to meet his mother, but worries that his eccentric family will embarrass him in front of the Cunninghams.

During a week-end at Potsie's uncle's hunting cabin, Fonzie is accidentally shot in the vicinity of his favorite jeans' back pocket; but accounts of the incident vary when the guys tell their stories to a small-town sheriff while the Fonz is treated in the local hospital's emergency room.

Potsie pressures Lori Beth for a date with her sophisticated roommate and gets an embarrassing job to pay his rent; Fonzie joins the Big Brother program and enlists Howard's help for "little brother" Joey's best-friend dilemma.

Roger and Chachi are thrilled when a star basketball player transfers to Jefferson High and joins the team. But the excitement changes to deep concern when the talented player leaves practice on his father's orders without offering the explanation - which Roger soon finds out - that he suffers from epilepsy.

A major university offers basketball star (but academic non-standout) Chachi a scholarship to attend their school. Fonzie is excited, but Roger and Howard not only fail to show the same enthusiasm, they become suspicious at the college's academic background.

The Fonz stands in for his best friend when the Cunninghams and the rest of the gang arrange a wedding by proxy for Lori Beth and Richie after Army red tape tangles the couple's efforts to get the bride-to-be to Greenland.

Howard und Marion sind in die Endrunde eines Bowling-Turniers gekommen. Als Marion zu Hause noch einmal ihren Schwung demonstrieren will, bekommt sie einen Hexenschuss. Howard sucht sich als Ersatz die attraktive Fern Flagg. Marion wird hellhörig, als er sie ihr gegenüber als alte Jungfer bezeichnet. Die beiden gewinnen schließlich das Turnier und gehen gemeinsam zum Festbankett. Dort versucht Fern, sich an Howard heranzumachen, doch sie hat die Rechnung ohne Marion gemacht .

Fonzie believes that a waitress named Angela may be the mother who left him when he was four.

Struggling to write a school essay on America's immigrant history, Chachi is inspired by Fonzie's colorful story told to the tune of an imagined melting pot melody.