Nickelodeon announced today that “Avatar Book 3” Complete Box Set will be released on September 16th. The set will include all 21 episodes across 5 discs for total runtime of 519 glorious minutes. Of course, what would a box set be without extras? Bonus materials will include: Exclusive Four-Part Audio Commentary by Creators; The Women of Avatar; Book 3 Finale Pencil Test Animation; and Into the Fire Nation at San Diego Comic-Con.

Check out the trailer below, along with 15 screen grabs.

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