Freed slave, Paris-trained surgeon, and New Orleans musician Benjamin January must face his troubled past when his former owner, Simon Fourchet, asks him to spy on his current stock of slaves. It seems that someone has gone on a rampage, ruining the sugar cane harvest, destroying the mill, leaving hoodoo messages on the walls, and igniting a rebellion. Ben agrees to conduct an investigation, as he knows that otherwise all the slaves will be punished, not just the guilty party. When he arrives at the plantation disguised as a white man's valet, he finds more than just the threat of a slave uprising. Between monitoring mysterious goings on in the bayou and witnessing horrific slave beatings, Ben finds that his own freedom may be at stake.