Roger becomes concerned that Flip is falling under the influence of a gang of hoodlums who drink heavily. Flip tells his big brother to butt out of his social life. One night, the teen-agers get very drunk and become involved in a hit-and-run accident. The victim: Heather, making Roger's reaction the least of Flip's worries. What will the police - and Fonzie - say when they have their turn with Flip?

Joanie and Chachi agree to work towards a common goal with their squabbling band members after Fonzie gets them a chance at a record contract; but what will they do when the record company agent tells them that the contract is only for the two of them and not the rest of the band?