Fonzie comes into Arnold's and asks Al to tell him when an old lady whose car he fixed shows up. Richie and the guys go to see a college recruiting film from Hawaii. Al bumps into Adriana Prescott and introduces her to Fonzie who is seated at a booth. Adriana is certainly not the little old lady he had met earlier, and he is pleasantly surprised. Adriana's Aunt Grace had left the car at the garage. Al brings some parmesan for Adriana to taste, and they speak Italian. Adriana is fascinated by Fonzie. She asks him to drop by the Valley Vista Tennis Club the next afternoon for some doubles tennis. Marion, Richie (with a spatula), and Joanie (with a fly swatter) demonstrate doubles tennis for Fonzie in the living room at the house. Howard enters perplexed at what they are doing. Fonzie, in his tennis outfit, tennis shoes, and leather jacket, and Richie go to eat at the club dining hall. Douglas comes in injured with Adriana. Richie is set up on a blind date with Millicent. Fonzie and Adriana lost 6-0. She then plays the piano and sings. At the house, Richie tells Howard he wants to go to school in Hawaii. Howard talks to Fonzie about Adriana. Howard says they're from different worlds and that she might not be able to get along in his. Fonzie takes Adriana to the spring dance at Arnold's where the guys finish playing "It's Late." Fonzie introduces Adriana to the band. She suggests they play an up-tempo song like "Splish Splash." Potsie tells Richie that Adrianna is married. He says that his father (who owns a gas station) sends all the bills to a Mr. Prescott. Fonzie doesn't believe Richie for a second. Fonzie finds out from Adriana that she is married, but she is separated from her husband. Fonzie says that he has rules that he lives by, and one of them is that he doesn't take what isn't his. Adriana kisses Fonzie goodbye. Fonzie dances with a girl. The Cunninghams return from playing tennis after Howard and Marion defeated Richie and Joanie.
Songs in this episode:
"Personality" by Lloyd Price (1959)
"Mona Lisa" by Nat King Cole (1955)
"Put Your Head On My Shoulder" (instrumental) by Paul Anka (1959)
"I Only Have Eyes For You" by The Flamingos (1957) (sung by Adriana)
"It's Late" by Ricky Nelson (1959) (played by the band)
"Splish Splash" by Bobby Darin (1958) (played by the band twice)