LOS ANGELES (AP) — A sequel to Nickelodeon's "Avatar: The Last Airbender" is in the works.

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.

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.

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