After an accident leaves her with a serious head injury, a woman wakes up remembering nothing of her past. As secrets are revealed she starts to question the people closest to her.

Almost seven months after the Rage virus has annihilated the inhabitants of London and the British Isles, the U.S. Army declares that the war against infection has been won, and that the reconstruction of the country can begin. In the first wave of returning refugees, a family is reunited, but one of them unwillingly carries a terrible secret. The virus is not yet dead, and this time, it is more dangerous than ever.