An unidentified virus is decimating the world. A highly ranked government scientist who had previously warned against such a potential peril is quick to recognize its virulence and the devastation it could cause. He convinces the president of the US to isolate all units of the Navy currently at sea and urgently trasfer equipment and scientists to these vessels to commence development of a cure. The world is rapidly succumbing to the pandemic except for one city, the most isolated capital city in the world, where early advice enabled the government to close down all trasport links (rail, road,...