The game is set in the middle of a war between the human Alliance and the De-Hattae - strange creatures that have been changed by the Darkness. The Darkness advances; the populated systems, ravaged by the war with De-Hattae, turn desolate. The forces of the once powerful human Empire retreat to the far corners of the galaxy. The player is a pilot in an elite squad of space fighters. They are stationed onboard a Talestra battlecruiser, a human flagship. It has been sent to a distant star system where several research labs are trying to find a way to turn the tide of the war.