>>3 think the OP needed this -
Claus and Lavie are vanship pilots who dream of flying a dangerous stretch of space known as the "Grand Stream" like their fathers before them. Taking on missions for income, one day they agree to shuttle a mysterious girl to the battleship "Silvana" and get caught up in a war that could change their world as they know it...
And yes I can agree the anime it self needed a bit little more depth/explanation, but over all the art in this series is realy nice, I guess you have to take somethings with a grain of salt.