The channel said Wednesday the new animated TV series will premiere in 2011. It has the working title, "The Legend of Korra."

Nickelodeon says the series will build on the "mythology" of the original "The Last Airbender" series, which inspired this summer's live-action movie from filmmaker M. Night Shyamalan (SHAH-muh-lahn).

The "Legend of Korra" is from the creator-producers of "Avatar: The Last Airbender."

Nickelodeon executive Brown Johnson says the new series will focus on a teenage girl avatar named Korra. Brown describes her as hotheaded, independent and "ready to take on the world."

"Avatar: The Last Airbender" has ranked among the highest-rate series on the Nickelodeon and Nicktoons channels.

Nickelodeon said in a release that “The Legend of Korra takes place 70 years after the events of ‘Avatar: The Last Airbender’ and follows the adventures of the Avatar after Aang – a passionate, rebellious, and fearless teenaged girl from the Southern Water Tribe named Korra.”

Korra’s quest eventually leads her to Republic City–the epicenter of the world of “Avatar.” A metropolis powered by steampunk-type technology, the city is inhabited by people from all nations. Korra finds that Republic City suffers from rampant crime and is also dealing with an anti-bender revolt. Korra is tutored by Aang’s son, Tenzin, is the ways of airbending.