A scanner discovers a plot by renegade elements in the city government to take power with the help of evil scanners.@。一阵偶发的流星雨却在转眼间变成致命最致命的梦魇，热闹的旧金山首当其冲，天文学家米歇尔要如何面对恐怖的致命天灾，挽救上千万人的性命？。
