Moviegoers around the world are gearing up to return to Pandora on Dec. 19, as "Avatar: Fire and Ash" hits theaters.

It's the third movie in the blockbuster franchise, continuing the saga that began in 2009's "Avatar" and picking up in the aftermath of 2022's "Avatar: The Way of Water." The original movie is the highest-grossing film of all time , while the sequel earned more than $2 billion worldwide, according to Box Office Mojo.

In an interview for "20/20," director James Cameron pulled back the curtain on how "Avatar: Fire and Ash" brings the series into its most visually and emotionally daring territory yet.

A new "20/20" special, " Avatar: A New Era " ai ring Friday, Dec. 12, at 10 p.m. ET on ABC and streaming the next day on Disney+ and Hulu, goes behind the sce

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