The story revolves around a colt born in Kentucky and named "Blue Grass". and the training of the colt to win the Kentuck Derby. and how all of that affected the lives, fortunes and, relationships and romances of the people associated with the colt's race-track career.
| Actor | Role |
|---|---|
 Bill WilliamsLin McIvor | Lin McIvor |
 Jane NighPat Armistead | Pat Armistead |
 Ralph MorganMaj. Randolph McIvor | Maj. Randolph McIvor |
 Russell HicksJames B. Armistead | James B. Armistead |
 Robert "Buzz" HenrySandy McIvor | Sandy McIvor |
 Ted HechtLayton | Layton |
| DDick FooteJim Brown | Jim Brown |
| JJack HowardArmistead Jockey | Armistead Jockey |
| BBill TerrellPompey | Pompey |
| SStephen S. HarrisonAttendant | Attendant |
 Pierre WatkinHead Steward | Head Steward |
 Harry LauterDick Wentworth | Dick Wentworth |