Earth. Fire. Air. Water. Only the Avatar can master all four elements. Only the Avatar can bring balance to the world. Only, the Avatar . . . can fail.
We have seen Korra grow from a headstrong girl fighting her way out of everything to a mature woman on the road to becoming a fully realised Avatar, her spiritual side finally awakened, granting her the ability to access the Avatar State, though not, perhaps, by choice. Yet a few questions still remain. What of the rest of the Equalist movement and the very real inequality faced by the benders? What of the triad turf war, last mentioned brewing around the time of the Revelation? What of Amon's mask, floating by itself in Yue Bay? What of the city, hope destroyed and splintered, a desperate need for reconstruction at hand? And what of the council, whose members are still missing or presumed dead?
Although Korra can access the other elements in the continuous Avatar State, she has neither true control over it nor the ability to bend earth, fire, or water outside of the state. Now she must undertake a journey to not only master the awesome power granted to her by the spirits but also regain what she has lost. Along the way, she encounters familiar faces, both friend and foe in a quest stretching from the poverty-stricken streets of triad territory to the frozen wastes outside Republic City, the road fraught with a kidnapping by the Equalists, an uprising amongst the triads, a seed of inception that grows into a monster, a betrayal by the one thought most dedicated to the cause, a rescue from an unexpected ally, a sacrifice by the one who may hold the key to salvation, and a shocking revelation that may destroy the Avatar cycle forever.
While a civil war rips apart mortal and spirit worlds alike and their lives come crashing around them, Avatar Korra and her friends must try to mend what has been broken, find what has been lost, and put together the shattered fragments of their lives if they hope to survive the storm to come.
For this era of Republic City will be written in blood.