I'm looking for a story how about I believe John Carter and Mars. It starts off for the relative (I believe a nephew) coming to read the journals of relative (I believe a uncle), about his fantastic life on another planet, there is something about running into aliens and is put into an arena to fight, heard about one of these aliens helping him but she keeps getting branded for making mistakes. There is also a princess handsome bad people chasing them around.

If anybody has any ideas please let me know and thank you so much.

Willow