Charles Cash is addicted to the mayo-drips and brown buns of a Big Mac, so he undergoes a colonoscopy. Under anesthesia he dreams about his advanced high school history class (three African American super stars) and the sometimes-salacious diary they're reading from the Civil War. The diary concerns Charles's own ancestors, specifically the picaresque adventures of Cato Cincinnatus Cash ("CC"), med school failure and dope addict, and his paramour,...