Ryan Richmond is an eccentric teenager living with his mother, father, sister and brother in the Holiday Inn they own in Sunnyvale, Arizona, the prune capital of the world. Is it any wonder that he wants to go to Saudi Arabaia for college and leave Sunnyvale far, far behind? He spends his days at school with his sex-obsessed best friend Dan Forrester and lusts after Lisa Winston, the sexy lounge singer who his parents have hired to perform at the Holiday Inn. Stuck without a date for his brother's wedding to a senator's daughter, Ryan goes to a computer dating service, which asks him such questions as "Can you breathe foreign substances?" Soon, Ryan is told that he may be an alien stuck on Earth along with thousands of others. Soon, Charles and Edna Pinsky show up and tell him that he may an alien prince meant to lead his brethren home. And that's when things get out of control...
| Actor | Role |
|---|---|
| NNicholas StrouseRyan Richmond | Ryan Richmond |
 Andrea ThompsonLisa Winston | Lisa Winston |
 Martha ScottVirginia Camalier | Virginia Camalier |
 Adam WestCharles Pinsky | Charles Pinsky |
 Hugh GillinFred Richmond | Fred Richmond |
 Matt AdlerDan Forrester | Dan Forrester |
 Timothy Patrick MurphyJeff Richmond | Jeff Richmond |
 Candice AzzaraEdna Pinsly | Edna Pinsly |
| IIsabelle WalkerJenny Camalier | Jenny Camalier |
 Gloria HenryMary Richmond | Mary Richmond |
 Paula IrvineMarilyn Richmond | Marilyn Richmond |
 Hugh O'BrianRichard Camalier | Richard Camalier |
 Roddy McDowallMinister | Minister |
 Maureen StapletonHelium Balloon Saleslady | Helium Balloon Saleslady |
 Dominick BrasciaThe Jock | The Jock |
 Kellie MartinSheila | Sheila |
 Charles MatthauNot listed | Not listed |
 Gregg ChristieSteve Peterson | Steve Peterson |
| CCecil HillBand Leader | Band Leader |
| KKelly HymanDonna (as Kelly Mohre) | Donna (as Kelly Mohre) |
 Linda LutzNurse | Nurse |
 Susan UrsittiSarah | Sarah |
| MMichael LindströmWedding Guest (uncredited) | Wedding Guest (uncredited) |