Book Four is set three years after Book Three. Now broken and bruised, Korra begins a journey of self-discovery and survival as the strong prey upon the weak. When an aggressive military force rises up led by the power-hungry Kuvira, the fate of the Earth Kingdom hangs in the balance and only the Avatar can set things right.
It's been three years since Zaheer poisoned Korra and the members of Team Avatar have moved on with their lives; Kai and Opal help a struggling Earth Kingdom town.
Korra's three-year journey of healing takes her to unexpected places.
Prince Wu's big day is ruined by Kuvira; Korra thinks she may have found the key to a full recovery.
Jinora, Ikki, and Meelo head out to find the Avatar.
Kuvira threatens Zaofu; Bolin is caught in the middle of the bad blood between Su Beifong and Kuvira.
Korra returns to her role as the Avatar, but is she really ready for action? Bolin and Varrick break from Kuvira's army.
Korra returns to Republic City and Team Avatar faces their first mission together in three years when Prince Wu goes missing; Bolin and Varrick are on the lam.
Wu begins his exile with Mako's family, and realizes that he knows nothing about his bodyguard.
The spirit vines in Republic City start abducting people and it's up to Korra to figure out why.
Bolin helps Opal and Lin save the Beifongs from Kuvira. Korra visits the Spirit World looking for help.
Korra and Team Avatar try to stop Kuvira from moving against Republic City; Kuvira unveils a deadly new weapon.
Team Avatar clashes with Kuvira on the streets of Republic City; Pema and Prince Wu help evacuate innocent citizens.