The Legend of Korra: Book 3 Official Trailer
Nickelodeon announced the release of their first promo to celebrate the upcoming US premiere of the third season of "Legend of Korra" on the networks official "The Legend of Korra" Tumblr blog, Korra Nation!
Thanks to Twitter user @inkasrain for alerting me to the "The Legend of Korra" news!
Additional source: Hypable.
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