Henry 'Little Onion' Shackleford, a newly freed teenager joins abolitionist John Brown on a holy crusade to end slavery. Onion encounters Frederick Douglass and Harriet Tubman, and he finds himself as a part of the famous 1859 raid at Harpers Ferry.
| Actor | Role |
|---|---|
 Ethan HawkeJohn Brown | John Brown |
 Joshua Caleb JohnsonHenry 'Little Onion' Shackleford | Henry 'Little Onion' Shackleford |
 Hubert Point-Du JourBob | Bob |
 Beau KnappOwen Brown | Owen Brown |
 Nick EversmanJohn Brown Jr. | John Brown Jr. |
 Ellar ColtraneSalmon Brown | Salmon Brown |
 Jack AlcottJason Brown | Jason Brown |
 Mo Brings PlentyOttawa Jones | Ottawa Jones |