If Book One is Air... I wonder what Book Two will be...
...unfortunately, there may not be one, the creators were waiting on ratings before confirming multiple seasons.
Took me an hour to find the show, considering I'm non-US based. However, when I did, I loved it. Well thought out, especially the pro-bending idea. I mean, what else could it be, an all-element Earth Rumble?
I have to admit, the first time I saw Tenzin, I lol'ed at his son acting like OM NOM NOM YUMMY HEAD.