Joanie and Chachi limp into Arnold's after having to double date with another couple because neither Joanie nor Chachi have their own car. The other couple brought along their pet monkeys which attacked Joanie and Chachi. They tell Al what happened, and he goes to get some raw meat for Chachi's eye. Chachi goes into the restroom to wash up. Fonzie comes in, and Joanie tells him about the date. She asks him if he would feel bad if a girl took him on dates in her car. She says Chachi can't afford a car because he helps support his mother. Joanie wants to buy her own car and will ask her parents for permission. Fonzie says Howard won't let her, but Joanie says she knows how to handle him.
In the Cunningham driveway, Potsie is sitting in his car, and Howard tells him to turn off the radio. Potsie's waiting for Fonzie to fix the car. Potsie honks the horn, and Fonzie comes out from underneath the car. Howard reminds Fonzie about their agreement that he wouldn't fix cars in the driveway. Fonzie promises that it won't happen again.
In the house, Howard tells Marion how he handled Fonzie. Marion and Joanie have prepared pork chops with pineapple for dinner and chocolate cake for dessert in order to soften Howard up before Joanie asks about the car. He turns her down. He says that a car is too expensive, and, if she got a job, her studies would get neglected. Joanie storms into the kitchen. Jenny comes in and asks Joanie about the car. Jenny says her father wouldn't let her get a car, but she's had one for a year without him knowing. Jenny puts the idea into Joanie's head that Chachi may leave her for someone who does have a car.
They go outside, and Jenny leaves. Joanie asks Fonzie if he can help her get a car. She leads him to believe that Howard is letting her get one, so he agrees to help her.
Scenes are shown depicting Joanie picking Chachi up at Jefferson High and driving around town as well as her getting a job as a cashier at a movie theater. At her job, Chachi complains that he and Joanie don't spend enough time together anymore. Howard and Marion are in line for tickets, so Joanie ducks behind the counter. She only shows her hands, but Marion recognizes them, and Howard sees the ring he gave her. Howard confronts her about buying the car. Howard tells her to finish her shift and, then, quit the job. After Howard and Marion leave, Joanie tells Chachi to bring the car back first thing in the morning (the seller had given her two weeks to decide if she wanted to keep it).
Chachi pushes the car into the Cunningham driveway. It's 6:00 A.M., and Joanie comes out and guesses that the car won't start and that Chachi had pushed it 10 blocks. They call down Fonzie who is wearing a red robe that has "Sweetums" embroidered on it. Joanie asks if Fonzie can fix her car. She needs it fixed right then so that Howard won't see it, but she lies to Fonzie telling him that she's late for work. He doesn't buy it and surmises that Joanie didn't tell Howard about the car. They hear Howard stirring in the house, and Joanie asks Fonzie to cover for her by saying it's one of the cars he's fixing. Chachi leaves. Howard comes out of the kitchen and asks what the car is doing there. Fonzie says it's from his garage, and Howard chastises him, once again, for parking a car in his driveway. As he tears into Fonzie, Joanie admits the car is hers. She apologizes to Howard and Fonzie for lying to them. Howard says that when he tells her what to do or what not to do, it's because he worries about her. She apologizes again as they embrace. Fonzie wipes away tears of his own.
Joanie goes inside to get ready for school, and Howard talks to Fonzie. He apologizes for yelling at him about the car being in the driveway. Fonzie accepts and offers to make Howard a truce breakfast.
Songs in this episode:
"Monkey Time" (instrumental) by Major Lance (1963)
"Louie, Louie" by The Kingsmen (1963)
"Big Girls Don't Cry" by The Four Seasons (1962)
"Alley Cat" by Bent Fabric (1961)