Book One
Prologue
19 years ago, when Avatar Korra was alive the benders of the world stood a chance against Amon and his Equalists, but once she was out of his way nobody could stop the masked man. Korra met her demise when she challenged Amon to a duel on Avatar Aang's memorial island. The young Avatar kept her word and showed up alone, but Amon did not; he brought his group of chi blockers with him and the water bender was heavily outnumbered.
Korra was quickly subdued and Amon took the poor girl's bending. He spared the girl's life, but when Korra discovered that there was no way for her to regain her bending, she took her own life so that another Avatar would have the chance to save the world. After that, the world quickly fell under the reign of the Equalists since the number of non-benders heavily outweigh the number of benders. Amon was able to poison their minds into believing that benders were the bad guys and needed to be taken care of.
Republic City fell first, then Ba Sing Se, the water tribes fell shortly after, now there is only one thing standing in the way of Amon and total world domination. The Fire Nation. They are fighting back with all of their might but Amon's armies only grow stronger while they grew weaker.
The benders of Republic City were given a choice: to voluntarily give up their bending and face no consequences, or hide their bending. If they chose to hide their bending and were discovered, which many were, the bending was removed and the person was thrown into a prison until the end of their lives. The people awaited the new Avatar to once again restore balance, but their savior never surfaced.
Now the benders are on the verge of extinction, and there seems to be no hope for their future.