Pinky Tuscadero, Fonzie's former girlfriend and fellow motorcyclist, comes back into his life, making him realize he still loves her. She wants to be in a demolition derby with him, but he states that it's no place for a woman.
Pinky is hospitalized after being injured in the head at the derby from "The Malachi Crunch." Fonzie gets revenge on the brothers and wins the derby. He also realizes that he wants to be more than just Pinky's boyfriend.
Richie's plans to party while his parents are out of town are ruined when Fonzie invites the very pregnant wife of one of his oldest friends to stay in Joanie's room and orders Richie to keep an eye on her until her husband returns from a road trip.
Richie's secret scheme to convince sophisticated Cindy Kendall that he has his own apartment by exchanging bedrooms with Fonzie is foiled when her furious father comes looking for her in the middle of the night.
Ace reporter Richie 'Scoop' Cunningham's determination to print the truth, no matter what, uncovers a high-school cafeteria meatloaf scandal, but later jeopardizes his friendship with Fonzie.
Richie pretends to be a hardware magnate looking for an advertising icon to try to meet the woman of his dreams: the beautiful poster girl for Wisconsin Cola.
The Fonz accepts a sophisticated older woman's invitation to play tennis at her country club, but later discovers that the game his pretty new lady is playing might not be confined to just the tennis court.
Only the Fonz stays calm when Richie and the gang get locked in the hardware store's basement vault where they have gathered to store their school's time capsule.
Fonzie enters his shy, visiting cousin Angie, into an Al's Drive-In-sponsored publicity event for the "Magilla Book of Records" to help the timid teenager uncover his famous Fonzarelli self-confidence.
Richie basks in glory after winning his high-school basketball game with a lucky shot in the final seconds of a nail-biter--until a rival team and their femme fatale kidnap him to keep him off the court.
Tired of being treated like a servant in her own home and searching for self-worth, frustrated homemaker Marion Cunningham gets a job at Al's Drive-In. But Al's teen customers start to leave when Marion's waitressing takes a back seat to motherly meddling, and an emergency meeting is called in the Fonz's office to decide her fate.
The Cunninghams and their friends reminisce through special moments and enjoy a few surprises on the night of Howard and Marion's surprise 20th wedding anniversary celebration.
Marion Cunningham is forced to reveal Fonzie's secret plan to graduate with Richie's senior class just before Principal Conners' startling announcement at the high school prom that puts the graduation ceremony itself in jeopardy.
Fonzie's friends convince their principal to let the night school graduate participate in Jefferson High School's commencement ceremony, but then must find a way to help the Fonz make his valedictory speech.
A short-tempered sergeant loses his tenuous grasp on discipline when the Fonz reports to the Army recruitment center soon after draftees Richie, Ralph and Potsie check in for physicals.
Howard Cunningham finds that it takes more than just a good idea to make a fortune from an invention when he joins forces with the Fonz to try to develop a prototype trash compactor.
After Ralph and Potsie accidentally let Fonzie's new dog Spunky escape out of an open gate, the little boy who finds the pup gets blamed for stealing her.
A too-close shave while driving in a stock-car race causes a shaken Fonzie to question his mortality, and soon leads him to Al Delvecchio's twin brother, Father Anthony, for answers.
