The monks fear that the end is here. Our balanced world will soon become unbalanced. Weather is changing and the four elements will become chaotic. They need their Avatar, master of all elements, to save the world using their physical bending and spiritual knowledge to rebalance and rebuild the world. Cattelaya/Kovu: Water. Kaige: Earth. Ember: Fire. Avatar Orchid: Air. Avatar Orchid, her twin sister Cattelaya and their friends must train to be ready for when the day come to save the world.