The phrase “cult classic” is often used in contemporary discussions, typically referring to a film or TV series with a passionate following. Yet, prior to the rise of the internet, genuine cult classics were movies that needed an introduction from someone well-versed in them. “The Rocky Horror Picture Show” is a prime example, transforming from a fringe production in London to an unsuccessful film and ultimately a midnight phenomenon that has lasted for half a century.

“Strange Journey: The Story of Rocky Horror” is a documentary that delves into the beginnings of this legendary film, as Richard O’Brien, creator of “The Rocky Horror Picture Show,” discusses in the trailer above.

His son, filmmaker Linus O’Brien, interviews various original cast members, including O’Brien, Tim Curry, Susan Sarandon, and Barry Bostwick. To capture the cultural significance of this film centered around peculiar extraterrestrials, O’Brien also engages with celebrities who grew up adoring “Rocky Horror,” like Jack Black from Tenacious D and Trixie Mattel, winner of “RuPaul’s Drag Race All-Stars.”

Archival video from the ’70s permits audiences to relive the time warp, highlighting the rise of shadow casts and the theatrical mayhem that became integral to the show’s heritage. Furthermore, the documentary aims to investigate why this unique performance connects with so many individuals.

How to watch: “Strange Journey: The Story of Rocky Horror” is set to begin a limited theatrical run in over 50 cities starting on Sept. 26, including the Landmark Theatres Nuart in Los Angeles, the Village East by Angelika in New York, and the Music Box Theater in Chicago.