A massive asteroid impact on the moon begins causing storms on earth due to the sudden changes in ocean tides. But when further examination is conducted it's discovered that the moon's structure is now entirely unstable -- threatening all life on earth. With time running out, a team of scientists turn to one man, demolitions expert John Redding, in effort to find a solution and secure the moon. 一块小行星撞上了月球，这使得海潮突然变化，并在地球上引发了风暴。但当进一步的调查后发现,月球的结构现在已经完全不稳定——这威胁到所有地球上的生命。随着时间的流逝，一组科学家只剩下爆破专家约翰雷丁一人，他在努力寻找解决办法并拯救月球。