Gritty vengeance western with a blaxploitation flavour led by cult star of the genre Fred Williamson. A vigilante is on the hunt for the men who killed his mother. Fred Williamson is 'Joshua the Black Rider', a Civil War veteran who returns home to find himself on a new battleground. On the day Joshua returns home from the Civil War, he learns that his mother has been brutally murdered by a gang of white outlaws. No-one is willing to help him track down the murderers, and he embarks on a one-man vengeance mission as a bounty hunter. His intention is not to hand them in and collect the reward. His reward will come when the killing is done.