From humble origins as a London fringe theater play to its meteoric rise, fall and resurrection as the biggest cult film of all time, this is the definitive story of the Rocky Horror Show, which was first released in theaters 50 years ago on September 26, 1975. With intimate access to its creator Richard O’Brien and other major players such as Tim Curry, Susan Sarandon and Lou Adler, the documentary explores what makes the play and film so singular…