Is it already too late to save the human race?
Mankind is losing the war. Earth is closing itself off behind hundreds of thousands of missile platforms, warships and layers of defenses. The rest of the human race must fend for itself against increasingly desperate odds.
There is a weapon that might help even the odds but that will require facing off against the enemy and discovering ancient technology that may not work since it did not save the last civilizations to use it.
Gunnery Sergeant Mathison won't quit.
But is the enemy already within the gates?