“Water. Earth. Fire. Air. Long ago, the four nations lived together in harmony. Then, everything changed when the Fire Nation attacked...” are the words that opened every single episode of the animated Avatar: The Last Airbender series. For those of us who grew up with the show, Katara’s opening monologue is engrained in our memories.

However, like many of the changes made in ATLA, there’s a good reason behind the opening credits being different, and showrunner Albert Kim explained the choice to CinemaBlend.