Four years ago, insectile aliens arrived on Earth in great pyramid ships. Now mankind is reduced to a few pockets of survivors, skulking in the shadows to elude the creatures that rule the planet. Among those survivors are Carli Dixon and Renee Johnson, an ill-matched pair thrown together through circumstance. Battling their extraterrestrial enemy and the betrayal of their own kind, Carli and Renee struggle against impossible odds to find safety. Rescuing each other from certain death cements their friendship. But to survive and save others like themselves, they must risk everything ... including each other.