From filmmaker Ric Burns comes this extraordinary documentary recounting the story of legendary neurologist Oliver Sacks. The film celebrates a fearless explorer of unknown cognitive worlds who helped redefine our understanding of the brain and mind while providing us with an understanding of the personal battles that were being waged with drug addiction, homophobia, a recalcitrant medical establishment that would only come to accept his work decades after the fact. Included are exclusive interviews with Sacks conducted just weeks after he received a terminal diagnosis and nearly two dozen deeply revealing and personal interviews with family members, colleagues, patients and close friends.