Zombie horror in which a group of survivors hole up together in a bunker to live out their days and attempt to discover a cure for the affliction which most of the world's population has succumbed to. To enable them to do so, they must monitor the progress of an infected host as they are administered with a medicine which has the potential to cure them. As the individual makes progress, it seems that the cure may be working. But are they safe working in such close proximity with imminent danger?