There's great excitement when Jack and his grandfather stumble upon the secret of making a nanobot. However, things go horribly wrong when the machine takes on a life of its own. All seems lost when it takes refuge up the nostril of the evil Cornelius Crumb. The zombiefied Crumb is eventually saved, (although he suffers a little frostbite in the process). But by now the nanobot has begun to mutate beyond control, can anyone or anything stop it from taking over Jack's home town of Ottenshaw - - or even worse, the world.