A young boy tries to train Thunderhead, a beautiful white colt and the son of his beloved Flicka, to be a champion race horse.
| Actor | Role |
|---|---|
 Roddy McDowallKen McLaughlin | Ken McLaughlin |
 Preston FosterRob McLaughlin | Rob McLaughlin |
 Rita JohnsonNelle McLaughlin | Nelle McLaughlin |
 James BellGus | Gus |
 Patti HaleHildy | Hildy |
 Carleton YoungMajor Harris | Major Harris |
 Ralph SanfordCharlie Sargent | Charlie Sargent |
 Al BridgeDr. Hicks | Dr. Hicks |
| RRobert FilmerTim | Tim |