The series will focus on Korra, a teenage female protagonist and current incarnation of the Avatar, who, according to the president of Nickelodeon, will be "hotheaded, independent, and ready to take on the world". She has already mastered the elements of Water, Earth, and Fire, but needs to master Air. The character was partly inspired by Avatar Kyoshi of the original series, whom the creators say was very popular among fans. In order to avoid repetition of Aang's adventures, the creators wanted to root the show in one place, called Republic City. A concept drawing of the city, released with the announcement of the series, shows the city's design as inspired by Shanghai in the 1920s and 1930s, Hong Kong, Manhattan, and Vancouver. In the show, Korra will have to learn Airbending from master Tenzin, son of Avatar Aang and Katara, and contend with an anti-bender revolution taking place in the city.