At the 2013 SDCC Nickelodeon released a preview of Season 2 for Avatar: The Legend of Korra. If you are an Avatar: The Last Airbender fan and have not watched this show, I strongly encourage you to fix that! The first season of LoK was amazing. Set in a post-Aang world, we are introduced to machines and steampunkiness; we are also set into what is being set up as a war between the benders and the non-benders with Korra and Aman, the villain, at the center.
This preview has no dialogue and it season one spoiler free. Check it out!