Eight hundred years ago, the Zhen Empire discovered a broken human colony ship drifting in the fringes of their space. The Zhen gave the humans a place to live and folded them into their Empire as a client state. But it hasn't been easy. Not all Zhen were eager to welcome another species into their Empire, and humans have faced persecution. For hundreds of years, human languages and history were outlawed subjects, as the Zhen tried to mold humans into their image. Earth and the cultures it nourished for millennia are forgotten, little more than legends.

One of the first humans to be allowed to serve in the Zhen military, Tajen Hunt became a war hero at the Battle of Elkari, the only human to be named an official Hero of the Empire. He was given command of a task force, and sent to do the Empire's bidding in their war with the enigmatic Tabrans. But when he failed in a crucial mission, causing the deaths of millions of people, he resigned in disgrace and faded into life on the fringes as a lone independent pilot.

When Tajen discovers his brother, Daav, has been killed by agents of the Empire, he, his niece, and their newly-hired crew set out to finish his brother's quest: to find Earth, the legendary homeworld of humanity. What they discover will shatter 800 years of peace in the Empire, and start a war that could be the end of the human race.