Fight like a man, or die like a slave. Brooklyn Marshall used to be a policeman in London, with a wife and a promising future ahead of him. Then he accidentally killed a rioter whose father was a Member of Parliament and had him convicted of murder. To ease the burden on the overcrowded prison system, Brooklyn was sold into slavery rather than incarcerated. Now, he's the "Mean Machine", a boxer on the slave prizefighting circuit, pummelling other slaves for the entertainment of freemen and being rented out for the sexual service of his wealthier fans. When Nathaniel Bishop purchases Brooklyn's services for a night, it seems like any other assignation. But the pair form an unexpected bond that grows into something more. Brooklyn hesitates to call it "love"—such things do not exist between freemen and slaves—but when Nathaniel reveals that he wants to help get Brooklyn's conviction overturned, he dares to hope. Then, an accident in the ring sends Brooklyn on the run, jeopardizing everything he has worked so hard to achieve and sending him into the most important fight of all—the fight for freedom.