简介：AgroupofaliensarriveonEarthaspartofanadvanceinvasionforce.Theirmissionistokidnapasmallsampleofhumansandrunthemthroughaseriesofrigorousteststodetermineiftheywouldmakesuitableslaves.Harper,oneofthealienexperimenters,hasbecemefrustratedwithherplanet'sendlesscycleofconquestandexterminationandbeginstofeelsomesympathyforherhumancaptives.Whiletheprisonersseeaglimmerofhopeinthecompassionatealien,willitbeanyuseinstoppingtheenormousattackfleetjustafewdaysfromEarth?
