Touted as one of the most groundbreaking science-fiction movies ever, Avatar is based in the fictional universe of Pandora, which humans are trying to colonize, in the mid-22nd century.
Released in 2009, the movie collected a whopping $2.79 billion at worldwide box office.
It held the record of being the highest-grossing film ever until Marvel's superhero movie Avengers: Endgameovertook that position last year.
What to expect from 'Avatar 2'?
Now, in Avatar 2, Sam Worthington, Sigourney Weaver, Stephen Lang, and Zoe Saldana will reprise their roles.
Others who have joined the cast include Kate Winslet, Michelle Yeoh, and Cliff Curtis.
The sequel will reportedly take place years after the first movie. "The world is bigger than the first one, but essentially, it's a movie about family," Worthington said.
'Avatar 2' is expected to be released in December 2021
Avatar 2 is expected to be released on December 17, 2021. However, it remains unclear if the makers would stick to that date or further delay the movie. Meanwhile, three more Avatar films are also in the works.