|This is starting off really good already. The main character, Korra, is originally a water bender, but she finds out at a young age that she is the new avatar. Now she's a teenager and has already learned 3 of the elements.|
Her grandmother, Ktarra, encourages her to go to Republic City where she can learn airbending from Tenzin (sp?), who also happens to be Ktarra and Aang's son. Tenzin is responsible for taking care of Republic City, and he tries to get Korra to go back home because he doesn't think she's ready to live here yet, but then changes his mind.
Korra has always had trouble with the spiritual aspects of bending, and this is hindering her airbending training. She gets frustrated and goes to join a team of bending fighters, against Tenzin's wishes, but it turns out good because she learns to move like an airbender that way..