Happy Days: When Heather asks Santa to patch up the rift between her mother and grandparents, Fonzie decides to make her wish come true. Meanwhile, K. C.'s parents visit for Christmas, and a rivalry between Howard and his brother reignites.

Starring:

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

Genre:

Comedy, Family, Music