Amateur nature photographer Anna Hawkins' life finally seems to be falling perfectly into place. With her wedding only a month away and a new career with a top of the line nature magazine just over the horizon, happiness is only a step away. But when she receives a bizarre and ominous message on her computer from a stranger named Alex, claiming that her world is nothing but a simulation about to be terminated, her reality itself is brought into question. With the help of this Alex McAster, a daring desk worker with a dream from a world outside her own, she must learn to survive in a world now hellbent on tearing her limb from limb. And all the while, she must also make a decision about what reality means to her. And time is running out.