The Happening

At a top-secret defence establishment, High Cross, somewhere in the southwest of England, a security guard is abducted, leaving the establishment completely cut off by a forcefield. The computers contained within the buildings have been reprogrammed, nullifying the British nuclear capability. A similar event has occurred in all the world's countries that have nuclear capability.

Mark Steel, a British secret service agent with the UET, is summoned to London to investigate the happening but is abducted whilst en route. He is given a message to pass on to the British government that aliens intend to take over Australia for themselves.