Henry Shackleford is a young slave living in the Kansas Territory in 1857, when the region is a battleground between anti- and pro-slavery forces. When John Brown, the legendary abolitionist, arrives in the area, an argument between Brown and Henry's master quickly turns violent. Henry is forced to leave town -- with Brown, who believes he's a girl. Over the ensuing months, Henry, whom Brown nicknames Little Onion, conceals his true identity as he...