I have a multi part question about a story I am presently planning

I have written the first few pages which introduces our main character. He's a young teenage boy. The first question is about the plot. He is abused mistreated and enslaved by an evil member of his family. Its an old story that has been told a million times before since the story of Moses, and will be told a million more time. The plot of an abused mistreated Person rising up for vengeance against the persecutor with the odds stacked ridiculously against him. Moses,the story of Sampsom, spartacus, The Gladiator, the Count of Monte Cristo and its being told now in a quite popular blockbuster movie Hunger Games. Which i just watched and was pretty good. But my question is, With so many other adaptations for this plot, is there any reason to read mine when it comes out. What can I do that hasent been done a billion times before?

The second question. I had originally planed this to occur in a small American town. I would introduce judicial corruption, police corruption which would allow the abuse and feminization of a boy to go on for so long. Then, He would be sold off or married near the end of the first part. Later he would escape become powerful and rich, and strong, or she would be powerful rich and strong and then come back for vengeance. I would expect the reader to suspend alot of disbelief that it could actually happen. But am I expecting too much?

Then another idea occurred to me. Perhaps it doesn't have to be America. Maybe the family could transport the boy to another nation to do this which i wouldn't have to expect so much. It could be a small totalitarian nation in middle America or Europe. Maybe a micro nation like the other world kingdom.
Which do you think would be better?