简介：Inasecretgovernmentlab,Dr.AlanWoodmanconductsexperimentstodevelopaviolentalienintoarevolutionaryfightingmachine.Thetrialfailsandthecreatureescapesintocompound,killingeveryoneinitspath.OnlyWoodmanandhisassistantCharliesurvive.Afterlockingdownthefacility,theysendoutadistresscallandthetopcovertmilitaryforceresponds.LedbythebeautifulbuttoughRitaTalon,theteamhasbeeninstructedtolocateanddestroythecreature.WorkingwithWoodmanandCharlie,theybeginthehuntbutquicklyrealizethattheyhavetodealwithmorethanjustthecreature.　　伍德曼博士获了古代陨石碎片，并发现上面记载有优秀物种的基因，他和上校安兹罗尔密谋复活这种强大物种，并作为战争机器。制造过程已经完成，上校为灭口派杀手去实验基地杀死那里所有工作人员，却发现异形已经被放出，他们如何逃离该基地呢？…