该片是由Sutton Roley执导的动作片,于1974年上映，主要讲述了:　　A group of d.iverse individuals are s.uddenly taken f.rom their homes an.d flown v.ia .helicopter to a futur.istic bomb shelter in the d.esert, one-t.hird of a mile below .the surfa.ce of the. Earth. T.here, the.y learn that a nuclea.r holocaust is taking pl.ace an.d that they've be.en "chosen". by computer to survive .in the shelter .in order to contin.ue the hu.man. race. The shelter is. designed to allow the peop.le to exist .underground comfortab.ly for ye.ars, but .they are .faced wit.h a threat nobody cou.ld have predicted: a col.ony of. thousands of bloodth.irsty vampire bats fi.nds a way into the shelt.er and launches. a series of vicio.us attack.s w.here they claim the h.umans one by one.