20th Century Fox
20th Century Fox

Last week, James Cameron revealed that he will shower the world with Avatar sequels soon enough, with a whopping four follow-ups to the 2009 smash planned from 2018 to 2023. Now, the Titanic director has revealed another striking detail about the humongous undertaking: All four movies are going to be filmed at the same time.

In conversation with Famous Monsters of Filmland (via Empire), Cameron described the four Avatar sequels as “all one big production” that will not be shot back-to-back. "It’s more the way you would shoot a miniseries," he said. "So we’ll be shooting across all four simultaneously. So Monday I might be doing a scene from movie four, and Tuesday I’m doing a scene from movie one.”

Cameron continued:

"We’re working across, essentially, eight hours of story. It’s going to be a big challenge to keep it all fixed in our minds, exactly where we are, across that story arc at any given point. It’s going to be probably the most challenging thing I’ve ever done. I’m sure the actors will be challenged by that as well. It’s like, ‘No, no, no, no, this person hasn’t died yet, so you’re still in this phase of your life.’ It’s a saga. It’s like doing all three Godfather films at the same time.”

The first Avatar sequel hits theaters in December 2018, nine years after the original was released and earned a Best Picture nomination.