Earth was our home before the invasion. Before we were forced to live on Mars.That exile ends now. We're coming for Earth. And we're going to take it back.Hopefully. If Ozzy Mack can do the impossible. With only a small crew, Ozzy must sneak onto Earth, acquire an ancient artifact, and wipe every alien off the crumbling blue planet.Of course, the plan will only work if the artifact turns out to be real...and if Ozzy can wrap his conscience around committing alien genocide.And all of that only matters if Ozzy can cheat death with every hour spent among the enemy.