Nature-benders are an incredibly rare and dangerous type of bender that is thought to have become extinct along with the air-benders. Yet, one remains. Kali. She has been sold, time and time again, through her life already. This time, she is sold to Iroh, who intends on freeing her from her chains for the first time in her life. Kali learns the meaning of independence, freedom, liberation, and love when she finds her life entwined with that of Zuko, son of the Fire Lord.