For over a thousand years, they have stared through the invisible force separating their world from ours, and grew hungry.Now, they've found a way through.Darkness from their side swallows our skies, their disease leaves our bodies as soulless husks. Only two things can save us: a mysterious power locked in a small chest covered with undecipherable glyphs, and the seven year old girl it chose as its protector.A young Katie, trying to make sense of the grainy flashes from her past, escapes an organization determined to use her untapped special abilities to open a mysterious box she knows nothing about. With the Artifact in tow, she is hunted until rescued by a haunted, PTSD Vietnam vet Jonas Montgomery.Surviving the Viet Cong and many battles with the unwelcome visitors, Jonas finds his inner demons even more difficult. His only purposes in life-protect and train the girl to master what lies within her.The dark forces plaguing our world increase. Jonas and Katie realize they must take a stand, before the final chance to save Earth vanishes.