Three young friends who are on vacation in Spain and a NASA scientist must join forces to save themselves and the rest of the world from an alien menace.
| Actor | Role |
|---|---|
 Dennis ChristopherDamon | Damon |
 Martin HewittMichael | Michael |
 Lynn-Holly JohnsonSamantha | Samantha |
| JJ.O. BossoCaptain J.J. Wells | Captain J.J. Wells |
 Yousaf BokhariMr. Bodi | Mr. Bodi |
| YYolanda PalomoMrs. Bodi | Mrs. Bodi |
| CChristina AugustinBaby Bodi | Baby Bodi |
 Luis PrendesDr. W. Tracer, NASA | Dr. W. Tracer, NASA |
| CCristina San JuanDuarte Cafe Waitress | Duarte Cafe Waitress |
| PPablo García Pérez de LaraMan in Store | Man in Store |
| CCarlos RamírezGas Station Attendant | Gas Station Attendant |
 Richard C. SarafianCapt. J.J. Wells (voice) (uncredited) | Capt. J.J. Wells (voice) (uncredited) |