Stanley, Harry, Sheila and Beth, four students from the 'free sex' Harrad College, spend the summer together to meet their families.
| Actor | Role |
|---|---|
| RRichard DoranHarry Schacht | Harry Schacht |
 Victoria ThompsonBeth Hillyer | Beth Hillyer |
 Laurie WaltersSheila Grove | Sheila Grove |
| RRobert ReiserStanley Kolasukas | Stanley Kolasukas |
 Bill DanaJack Schacht | Jack Schacht |
 Emmaline HenryMargaret Tenhausen | Margaret Tenhausen |
 Walter BrookeSam Grove | Sam Grove |
 Titos VandisMr. Kolasukas | Mr. Kolasukas |
 Angela ClarkeMrs. Kolasukas | Mrs. Kolasukas |
| JJodean LawrencePaula Schacht | Paula Schacht |
| MMimi MaynardDiane Schacht | Diane Schacht |
 Sherry E. DeBoerDee | Dee |
| PPearl ShearFritzi Franklin | Fritzi Franklin |
 Fred WillardGary Logan | Gary Logan |
 Patrice RohmerMarcia | Marcia |
 George MemmoliLarry | Larry |
 Bill SalugaNot listed | Not listed |
 Marjorie BennettMotel Desk Clerk | Motel Desk Clerk |
 Maggie WellmanNot listed | Not listed |
| JJames BeachBrad | Brad |
 Lisa MooreArnae | Arnae |
 Diana DarrinNot listed | Not listed |
| MMargarita GarciaNot listed | Not listed |
 Jane LambertFlorence | Florence |
| KKendall Carly BrowneNot listed | Not listed |
| SSylvia WaldenGroupie | Groupie |
| GGeorge McKelveyNot listed | Not listed |
 Marty AllenBert Franklin | Bert Franklin |