Book 1: Winter: The Equinox of Change

What if Katara sacrifices herself for he mom, only to find herself imprisoned where she meet Hama. After being separated from the escaped waterbenders in a desperate attempt to save themselves she must find a place to stay. Alone after a perilous journey she meet Suki on Kyoshi Island. Together they discover the new avatar, and go on a mission to end 100 years of darkness. Remake