Mitch Carron, a deputy sheriff from Earth, steps through a doorway to find himself in a far-off world. Unknown to Mitch is the genetic trace of an ancient and powerful race that he carries in his DNA, which can reactivate the now-dead Quantrous Empire. Mitch learns quickly that a maniac called Mac has been bringing people through portals from different planets for centuries to find the genetic match that would allow him to take control of the coveted Shadow technology of the Quantrous Empire.
Befriending another displaced traveler who later becomes his wife, Mitch begins to unravel the mystery of the overnight demise of the mighty empire and finds both friends and enemies along his journey to reactivate his newly found heritage. As his wife is captured by the race that had wiped out his genetic ancestors and sells her into slavery, Mitch finds his humanity slipping away and battles with the true loneliness that comes from being the sole survivor of an extinct race in an empire of one.