MATT and ANNA are a young couple living in London. Anna is starting her career and knows what she wants, whilst Matt is still struggling to find his purpose in life. On the surface they are happy but tensions are beginning to mount. Then one morning masked thugs break into the flat and kidnap Anna before assaulting Matt, locking him into a mysterious vest and leaving him a mobile phone. Matt is told the vest contains a package which he must deliver by following instructions issued to him via the mobile phone. If he fails, tries to seek help, or deviates from their instructions, they will kill Anna. Over the course of one day Matt has to make his way across London in a desperate bid to save his girlfriend as a host of characters attempt to derail him from his mission.

Three months have passed since a viral outbreak wiped out 99.9% of the world's population, turning its victims into flesh-eating living dead. In the UK, a surviving band of soldiers and civilians have taken refuge at a rural military barracks. Life in this new world is tough and brutal, but hope appears when a high level communication is received from a military base on the coast, telling of sanctuary elsewhere in Europe... But just as salvation appears to be in reach, the base suffers an overwhelming defeat at the hands of the living dead! The surviving handful of troops and civilians must now make their way to the coast to uncover the truth behind the message. Their perilous journey takes them across a now treacherous, death-ravaged landscape, where the living dead are vast in number and wandering bandits impose their own malicious sense of law and order. What follows is a journey into hell and a desperate battle against all odds for the very survival of the human race.