Last Born of Ki'darth

This title is a Fantasy tale told within a Sci-fi Dystopian setting where the main character, Nick, is reborn as a champion for a group of aliens whose technology has been lost to time, leaving them in huts and reliant on the magical Champions, Nick being one of them. But when the shield around the world goes down and invaders come calling for old forgotten crimes, they must act fast and figure out a way to get the tech working once more.