Galactic Heroes Unite!

So what happens when you've got some poor worn-out soldier who can't die (Jonathan), a poor time traveler who's traveled across thousands of years trying to work out the enigma of existence (Bethi), and a semi-indestructible soldier/pilot/angry-but-silent heroine who wants nothing more than to get rid of the constant feeling that insects are crawling around inside her synthetic polymer skin (Jill)?