'Civilization slipped into its second dark age on an unsurprising track of blood but with a speed that could not have been foreseen by even the most pessimistic futurist. By Halloween, every major city from New York to Moscow stank to the empty heavens and the world as it had been was a memory.' The event became known as The Pulse. The virus was carried by every cell phone operating within the entire world. Within hours, those receiving calls would be infected. A young artist Clayton Riddell realises what is happening. He flees the devastation of explosive, burning Boston, desperate to reach his son before his son switches on his little red mobile phone ...