A group of diverse individuals are suddenly taken from their homes and flown via helicopter to a futuristic bomb shelter in the desert, one-third of a mile below the surface of the Earth. There, they learn that a nuclear holocaust is taking place and that they've been "chosen" by computer to survive in the shelter in order to continue the human race. The shelter is designed to allow the people to exist underground comfortably for years, but they are faced with a threat nobody could have predicted: a colony of thousands of bloodthirsty vampire bats finds a way into the shelter and launches a series of vicious attacks where they claim the humans one by one. 　　译文(2): 一群形形色色的人突然被从家中带走，用直升机飞往沙漠中一个未来的防空洞，这个防空洞位于地球表面以下三分之一英里处。在那里，他们了解到一场核浩劫正在发生，他们被电脑“选中”在庇护所中生存下来，以延续人类。这个避难所的设计目的是让人们在地下舒适地生活多年，但是他们面临着一个没有人能预料到的威胁: 一群成千上万嗜血的吸血蝙蝠找到了进入避难所的方法，并发动了一系列恶毒的攻击，在那里它们一个接一个地杀死人类。