|Taf is able to watch over the whole world from this swamp... she's like an all-knowing god.. she tells Korra about the metal poison that's still stuck in her body, and Korra tries to get her to take it out, but Taf says Korra's body is resisting and that deep down she wants to remain poisoned and unable to fight, because she's afraid to continue doing her avatar duties.|
Tenzin sends his kids out on a mission to find Korra.. The younger girl, who was feeling left out, finds out about the swam when she gets kidnapped and makes friends with her kidnappers. Korra regains some of her balance by touching a tree's roots, and then the kids are able to find her... Then Korra removes the rest of the poison from herself.
Meanwhile Kuvira casually just steals the Earth kingdom's throne from Prince Wu, and starts leading an imperial takeover of all the Earth kingdom cities. Boline and that business guy stick with her for a while, giving her the benefit of the doubt.. until they find out that the cities they are "saving" are forced to become Kuvira's slaves.. she's a psychopath who threatens people to get what she wants..
Before Kuvira gained power... the nations asked the Fei-fong sister (the leader of the metalbender city) to take care of the chaos in the Earth kingdom and become their new leader, but she refused, so they went to Kuvira instead.