Reclaiming Earth

About a thousand years into the future life has changed on Earth. An alien race has taken over management of the planet when our governments could no longer control the violence and undesirable behaviors of it's citizens and correct the destructive path our planet's ecological system was on in the 21st century. What started as assistance from a neutral third party, gradually morphed to the citizens of Earth being essentially enslaved by the Tractorians. Now so many years later, most are content to live in the only way they know how, especially as they live in peace and comfort -- as long as they follow the rules. One day Lexi...