商用直升机驾驶「凯莉」与夫婿「高登」警探感情甚笃，各有事业的一片天空，一日，「凯莉」接受指派负责接送神秘异国阔客往来洛城大楼间，怎知神秘阔客竟是非洲来的恐怖组织领袖，恐怖份子利用高科技控制大楼，挟持人质，手段异常残暴，「凯莉」意识到情况不对，怎知已身陷危机中，身为人民保姆的高登自然要与恶徒奋战，但是解救爱妻使得这次任务更加艰钜。

In a future society where water is a precious resource, a savage gang murders a young girl's family. She is taken in by a man named Trooper, who teaches her how to fight, kill and survive. When she gets old enough to fend for herself, she sets out in search of the gang that killed her family.