Enceladus

"Far down the road in Human history, an abnormality in space-time suddently appeared on one of Saturn's moon : Encelade. Spaceships of an unknown origin take the human fleet by surprise. A real genocide. Earth also seems to be overwhelmed by the assault and only a small group, scouting near Encelade manageto avoid the attack. By approching the icy surface of the moon there is still one last hope o…