Korra needing help, so she goes on a sky bison to the airbenders? Sounds exactly like my fanfiction. OK, OK, I'll try to drop that, but seriously, it's not my fault I had a Legend of Korra fanfiction idea before it even existed!
So, nothing really happened in this episode. We just get further confirmation Varrick is a villain. I like that Tenzin is trying to live up to his father's expectations of him, and that may not be what he really is. It makes sense. I don't get why Jinora can connect to the spirits, though. Is it an inherent ability? I thought you could just train it.
OK episode. It looks like Desna and Eska may join the other side eventually, considering how Unalaq treated them. And now we know for sure Unalaq is trying to free Vaatu. I wonder if he knows he's the spirit of chaos, or he was just tricked by him into thinking freeing him would be good for everyone.