Before "Batman v Superman: Dawn of Justice" movie started production, there was another film that was supposed to come out that would feature DC Comics superheroes. Unfortunately, the project was shelved even with a cast ready to go. Now, it seems that the project has picked up, only in a different manner, as a documentary about the cancelled film is being planned instead.

The movie, which was set for a 2009 release, was initially called "Justice League Mortal." According to The Hollywood Reporter, "Mad Max: Fury Road" director and screenwriter George Miller was supposed to helm the movie for Warner Bros. and shoot it in Australia.

The plan

The aborted film piqued the interest of filmmaker Ryan Unicomb as well as producers Steven Caldwell and Aaron Carter, who are now thinking of producing a full-feature documentary on what would have happened with the movie should it have pushed through.

As If.com.au reported, the three have tentatively titled the project as "Miller's Justice League Mortal," which aims to provide viewers with an "unbiased account of the project's development, preproduction and cancellation, as well as the impact on the Australian film industry."

While the director and producers already have a plan on how they would come out with the documentary, they have yet to approach Miller and Doug Mitchell who was the director's producer at that time.

"We wanted to get this story out there to help us gauge interest," said Unicomb. "I have always been fascinated with project, which would be in the same vein as 2013's 'Jodorowsky's Dune' and this year's 'The Death of Superman Lives: What Happened?' about a Superman movie that Tim Burton was to direct in the 1990s."

The trio have reportedly approached screenwriter Maria Lewis to pen the documentary as they interview cast and crew members who were supposed to work in the film.

Why the film was cancelled

In 2007, Warner Bros. announced that the movie would have a 2009 release. However, the writers' strike in the country affected the project, If.com.au added. After that, the director was faced with problems in shooting the movie as it was ruled ineligible for the 40 percent producer offset by the Film Finance Corporation.

The cast was already complete when it was announced that the project would not push through.

Armie Hammer was supposed to play Batman, Megan Gale as Wonder Woman, DJ Cotrona as Superman and Adam Brody as The Flash.

Santiago Cabrera was also on board as Aquaman, Common as Green Lantern, Zoe Kasan as Iris Allen, Teresa Palmer as Talia Al Ghul, Hugh Keays-Byrne as Martian Manhunter and Jay Barcuchel as Maxwell Lord.

No date has been set for the documentary's release.