I was thinking something more traggic or supernatural, like maybe theres a galactic war going on since we're doing sci-fi. So maybe a terrorist (not muslim) attack on a sky elevator (space elevator) and it comes crashing down. The four of them happened to be heading to the space station at the top when this happens. This would of course be after their introduction stories that led up to that moment when they are all stuck together trying to escape the sky elevator. But at some point it collapses at the part they were at drifted off into space. The air lock would of course keep them alive as they search for an excape pod or ship.<br/><br/>Just a thought, we can go with something different if you gals don't like it.