Marcus Bach, a researcher in primitive and exotic religions, and his photographer wife, Lorena, arrive in Haiti. Their purpose - to penetrate a religion which has been forbidden to outsiders. The ancient rites of Voodoo. Strangely, a white man is their guide. Stanley reser, an enigmatic American doctor, is rumored to be a Voodoo priest; on his arm flicker a tattooed red dragon. The three watch the mambos chant their prayers to the snake...