On May 1st, the planet was attacked by a mysterious army. Their identity and their place of origin are still unknown. Their objective, however, is clear: annihilation!
Awakening from a three-month coma, Christopher Denmark finds a world in ruin and himself the sole survivor of the most disastrous military operation in American history.

With the world gone to hell and a government in tatters, Christopher must uncover the truth behind the enemy who tainted the sky purple and plunged the planet into darkness, while struggling to overcome his worst fears and inner monsters that have forced him to spill blood countless times. Christopher has always felt more like the villain, but now, his country is asking him to be the hero.