At a top secret defence establishment High Cross somewhere in the south west of England a security guard is abducted leaving the establishment completely cut off by a force-field. The computers contained within the buildings have been reprogrammed nullifying the British nuclear capability. A similar event has occurred in all the worlds' country's that have a nuclear capability. Mark Steel a British secret service agent with the UET is summoned to London to investigate the happening but is abducted whilst on route. He is given a message to pass on to the British government that aliens intend to take over Australia for themselves.