Years after the shocking murders that made the name Charles Manson synonymous with pure evil, the three women who killed for him — Leslie Van Houten, Patricia Krenwinkel, and Susan Atkins — remain under the spell of the infamous cult leader. Confined to an isolated cellblock in a California penitentiary, the trio seems destined to live out the rest of their lives under the delusion that their crimes were part of a cosmic plan — until empathetic graduate student Karlene Faith is enlisted to rehabilitate them. Convinced that the prisoners are not the inhuman monsters the world believes them to be, Karlene begins the arduous process of breaking down the psychological barriers erected by Manson.