|Starting season 2 during pot brownie come-up...|
Tenzin takes Korra back to her hometown for the southern water tribe.. The northern water tribe came to visit too, and Korra's dad seems to not like his brother, the northern water tribe's leader, who keeps offering to train Korra instead of Tenzin.. Korra just now finds out from this guy that about the water spirits that have been attacking the water tribes, which means she needs to learn the spiritual side of bending next.
Tenzin has been treating Korra like a kid because she over-uses her avatar state. She wants to go with her other uncle who thinks the south tribe has become lazy and unspiritual.. Korra decides to go with her uncle Oodalak instead of finishing her airbending training.