A prize-winning stallion breeds off-guard with a mare owned by his rival. The colt is trained to race from birth, eventually running in the Kentucky Derby against another horse owned by its sire.
| Actor | Role |
|---|---|
 Ralph ByrdBen Marshall | Ben Marshall |
 Mary CarlisleMarian | Marian |
 George 'Gabby' HayesGramps Montrose | Gramps Montrose |
 Marvin StephensHefty | Hefty |
 Charles Cahill WilsonSpencer Bogart | Spencer Bogart |
 Kenne DuncanBrady | Brady |
 Robert AllenGreg Bogart | Greg Bogart |