Renowned oneirologist Ambrose London is requested to appear at Arkham Asylum to study the strange case of dissociative identity disorder in patient James Fhelleps/Joe Slater.
Nathan's Kingdom is a dark fantasy, coming-of-age drama about Nathan, a 25-year-old autistic man struggling with his teenage prescription-addict sister, and rather than surrendering their lives to social services, they risk it all to find a kingdom that once existed only in their imaginations.