The third season of the animated television series The Legend of Korra, titled Book Three: Change takes place largely in the Earth Kingdom, one of the four major nations in the setting of the series, and also depicts the re-emergence of airbending among people of other nations.
The season's antagonists are the "Red Lotus", a group of dangerous anarchists led by the new airbender Zaheer who wants to overthrow the world's governments and the Avatar. Among the season's new supporting characters are the now elderly Zuko, a character from the original series, as well as Lin Beifong's sister Suyin and her family.
Book Three introduced many new characters that would recur until the end of the series, including the extended Beifong family and Jinora's romantic interest, the orphaned thief Kai, named after writer Josh Hamilton's son. Bryan Konietzko was worried about introducing him because of the growing roster of characters and his similarity to Aang.