It's Fonzie's birthday, and past clips are shown as the gang reminisce.

Howard décide de faire une surprise à Marion : pour célébrer dignement leur anniversaire de mariage, il demande à ses proches de l'aider à préparer une petite fête à la maison.

Lori Beth doit écrire une rédaction sur une famille américaine typique de la classe moyenne. A l'insu de Richie, la jeune fille décide d'interviewer Marion et Howard Cunningham sur leurs habitudes

Celebrate the 20th Anniversary of Happy Days, one of America's favorite TV shows, with members of the original cast. Includes personal recollections and film clips. Stars featured: Ron Howard, Henry Winkler, Tom Bosley, Marion Ross, Anson Williams, Danny Most, Noriuki "Pat" Morita and Scott Baio.

In this two-hour reunion special, various clips are shown from past episodes, and cast members recall memories from their time on the show. Also included are highlights of a reunion softball game played by members of the cast as well as a cast reunion at Arnold's Drive-In.

Mork returns to 1950s Milwaukee to learn about relationships in this retrospective episode.