The Elementals - Rise of the Dark Lord

Knox, the grand leader of the Abyss, has fallen to corruption within himself. His unjust rule is now showing, and people are starting to rebel because of favoritism to higher class. Knox's only interest is taking over the other 5 kingdoms, and he is willing to throw away his people for it. Knox's unkindness was spared by no one, including his own wife and child. Though his wife, Nyx, is oblivious to the the fact his rule is destructive, Knox's daughter does not have this same blindness. People are dying because of the rebellion, parents throwing out their children because of the loss of income, and bills rising. Children fending for themselves on the streets, and people fighting for their lives if lost in conflict. Any and every single time someone has attempted to take Knox's throne, they have died. So, with all those past failures and sacrifices, Nerezza thinks its about damn time someone unseats the monster that is her father. She plans on doing it herself, along with assistance from her two friends.
How will Nerezza take control? Will her father kill her for it? And if she does manage to get his throne, how in the whole realms will she remedy his poison?

This is backstory to my other story that I am writing : The Elementals - Welcome to the Abyss.
Same inspirations as that one.
I did not, however, put that I'm a high school student in that description. I will upload whenever I can, and I will write whenever motivated.