Earth was invaded by aliens and humans were enslaved. Many of the Earth's population are transported on spaceships to different planets to work in mines and factories as slaves. The story follows Sophie, a young woman from a Polish-English family. For the most of the alien occupation she lived a good life thanks to her father working on a high position at a state company. Everything changes when her parents are killed after being suspected of aiding the resistance movement. That lose changes Sophie into a freedom fighter.