Allison Hewitt is trapped. In the storeroom of Brookes & Peabody's. In a world swarming with the Undead, the Doomed, the Infected. Locked away with an oddball collection of colleagues and under siege, Allison takes advantage of a surviving internet connection and blogs. She writes, as the food runs out and panic sets in, as relationships develop and friends die, and as zombies claw at the door, all in the hope of connecting with other survivors out there. But as she reads the replies to her posts, Allison begins to comprehend the horrifying scale of the damage. And when no one comes to the group's rescue, they are forced to leave the safety of their room and risk a journey across the city; streets that crawl with zombies, and worse - fellow humans competing for survival.