Fire and Ash highlights the home of the mysterious, fire-based Na'vi known as the Mangkwan Clan in James Cameron's sequel.

The upcoming Avatar movies look to expand the franchise lore ... and Neytiri's sons could get injured badly enough to need the Tree of Souls to save his life. This could form the plot twist ...

It's safe to say that Avatar is a mega sci-fi franchise after The Way of Water earned over $2 billion worldwide 13 years after the original, becoming the third highest-grossing movie of all time ...