未来的一天，太阳活动引发了隐藏在墨西哥金字塔的一个灯标，原来这是外星人入侵的信号。几个小时内，外星人的战舰击毁了地球所有的军事设施，地球危在旦夕。一位人类科学家发现了击退外星人侵略者的秘密，于是.........

In the distant future, a large portion of humanity lives on Mars, in cities that resemble those once found on Earth. The cities are protected from the inhospitable Martian atmosphere by dome-like forc...