As far as what is known about the single-player aspect, you play the role of Dr. Jack Mason, a burned-out doctor with a dead-end job, transporting sick prisoners from Earth, which has become a prison, for treatment elsewhere. As if crummy work conditions weren?t enough, a mysterious disease has begun to spread on the planet?s surface, making it a hostile environment. Just when it seems nothing else can go wrong, the routine transport of a prisoner named Katrina goes terribly wrong when the transport is shot down, setting up Mason?s search to rescue Katrina and find safe passage off Earth.