Here’s how M. Night Shyamalan’s sequel to The Last Airbender should go:
Proceed from the first movie. The plot roughly follows Season 2. They’re looking for an earthbending teacher for Aang, and finally encounter Toph. She is played by a large, musclebound man.
Suddenly we zoom out. Everyone is on a stage. The real Gaang (appropriately cast) watches from the audience. We have been watching the movie’s version of the Ember Island Players this entire time. What a twist.