Screenwriter David Fuller spent eight years researching Sweetsmoke, in the process discovering that members of his family fought on both sides of the Civil War. Cassius Howard is a skilled slave, once his master's favorite. But his master Hoke is now little more than a fragile old man, depressed about an ever-shrinking plantation and losing a son to war. When an old freedwoman who once saved Cassius from Hoke's wrath is killed, Cassius risks everything to avenge her death.