 According to the film, the zombies are the preserved bodies of slaves brought to the United States from Guinea.AIP had previously combined the horror and blaxploitation genres with "Blacula" (1972) and its sequel, "Scream Blacula Scream" (1973).The story centers on Diana "Sugar" Hill (Bey), a photographer in Houston whose boyfriend, nightclub owner Langston (Larry D. Johnson), has been killed by mob boss Morgan (Robert Quarry) and his men when he refused to sell the club to Morgan.