This haunting story, based on true events, reveals the fractured mind of Billy Milligan, a man with multiple personalities. 24 individual personalities, different in intelligence and aspirations: adults and children, men and women, people with criminal inclinations and sensitive artistic natures, are fighting for the possession of his body, not allowing him to control his actions. Multiple personality is a kind of experiment of nature on human. Studying this mysterious state of consciousness can tell us a lot about ourselves, helping us understand something important in terms of control over the body and mind.