Eight years ago the Earth was caught in the middle of an Alien civil war.
The Aelore's had came to Earth seeking refuge, only to be ultimately pursued by the Silores. Taking the Earth's surface and most of humanity down in the fight.
Tara Ward's earliest memories had only ever been of the Colony. As it was for the other children who lived in the colony with her. The Earth's surface uninhabitable, forcing humanity to live underground...