Stanley goes with his family and friend's to his great uncle's dude ranch. The local land baron is trying to buy the ranch and make it a parking lot for his nearby amusement park. The only way Uncle Stew thinks he can get any money to save his ranch is to find other dinosaur bones to attract customers. Stanley and his friends help in the search.
| Actor | Role |
|---|---|
 Jessica D. StoneStanley (voice) | Stanley (voice) |
 Charles ShaughnessyDennis (voice) | Dennis (voice) |
 Ari MeyersMom (voice) | Mom (voice) |
 Hynden WalchElsie (voice) | Elsie (voice) |
| KKhylan JonesMimi / Marci (voice) | Mimi / Marci (voice) |
 Hillary B. SmithPaleontologist (voice) | Paleontologist (voice) |
 Randy QuaidRockin' Rory (voice) | Rockin' Rory (voice) |
 John RitterGreat Uncle Stew (voice) | Great Uncle Stew (voice) |
 David LandsbergNot listed | Not listed |
 Shawn PyfromNot listed | Not listed |
 Philece SamplerNot listed | Not listed |
| DDaniel Franklin HatchNot listed | Not listed |