After a collision with a comet, a nearly 8km wide piece of the asteroid Orpheus is heading towards Earth. If it will hit it will cause a incredible catastrophe which will probably extinguish mankind. To stop the meteor NASA wants to use the illegal nuclear weapon satellite Hercules but discovers soon that it doesn't have enough fire power. Their only chance to save the world is to join forces with the USSR who have also launched such an illegal satellite. But will both governments agree楚阳展开一看，不由苦笑：“铁龙城来信，在说大赵撤退之后是否追击的问题。”乌情情脸色一变，两人正在讨论这个关键问题，没想到铁龙城就来了信。