Sony Pictures Classics this week released the first full-length trailer for Jodorowsky's Dune — a forthcoming documentary that goes behind the scenes on the craziest Dune adaptation that never was. Directed by Frank Pavich, the film tells the story of Chilean-French director Alejandro Jodorowsky, who spent a good chunk of the 1970s trying to adapt Frank Herbert's classic science fiction novel to the big screen. It never happened, of course, but the possibilities are trippy and tantalizing.

The film would've starred Jodorowsky's 12-year-old son as part of a cast that included Orson Welles, Mick Jagger, and Salvador Dali, as the mad emperor of the galaxy. Jodorowsky also approached Pink Floyd and Peter Gabriel about scoring the film, and wanted H.R. Giger and Jean Giraud to work on the set design. The director's ambitions were grand, despite the fact that he hadn't even read Dune.

"I wanted to make something sacred," Jodorowsky says in the trailer released this week. "A film that gives LSD hallucinations without taking LSD."

Pavich's documentary debuted to glowing reviews at last year's Cannes Film Festival, and will be released in theaters on March 7th.