Happy Days: Richie, Potsie, and Ralph go on a trip to Chicago with the school choir. Not wanting to stay in their hotel room all night, they decide to sneak out and see a show.

Starring:

Al Molinaro, Anson Williams, Don Most, Erin Moran, Henry Winkler, Marion Ross, Ron Howard, Scott Baio, Tom Bosley

Genre:

Comedy, Family, Music