Happy Days S03 E15 Dance Contest

"Those were the days of the 1950's...filled with innocence and the promise of even better days to come."

Marion, tired of the monotony of everyday house chores, decides to enter a televised dance contest. When Howard won't participate with her, she secretly enlists the help of Fonzie. Arnold unwittingly tells Howard that Marion has been at Arnold's early in the morning with another man, and Howard becomes suspicious.