After seeing how much in love Louisa's Aunt and Uncle are after 50 years of marriage, Joanie and Chachi decide to elope.
Chachi is convinced that Joanie will leave him when her first love comes back on the scene.
On Christmas Eve, a night which Al wanted to spend at home with his close family and friends, Rico books the band to perform on the Christmas Radio Special. After stopping to pick up a hitchhiker on their way to the studio, their van gets stuck in the snow.
After preparing a terrible stew for Chachi, Joanie daydreams about their golden years when he leaves her for a woman that can cook. Not wanting her life to mirror the dream, Joanie enlists the help of Louisa to make a great dinner for Chachi. Rico tells Chachi to say the dish is good even if it isn't.
After repeatedly being warned about showing up late for and taking excessive breaks during performances, Al and Louisa are left no choice but to fire the band.
Against Louisa's wishes, Joanie and Chachi go to an exotic French film and try to leave when Al and Louisa show up to watch the same movie.
Louisa's friend from high school, Vanessa, who is a record producer, comes for a visit and asks the band to play for her. Mario suspects Vanessa is interested in Chachi for more than just his music.
Joanie Loves Chachi is an American television spin-off of the American sitcom Happy Days that was originally broadcast on ABC from March 23, 1982 to May 24, 1983. It stars Erin Moran and Scott Baio as the titular Joanie Cunningham and Chachi Arcola, respectively.