Anunexplainableeventthathasthrusttheworldintochaosbringstwosurvivorstogetherasaportionoftheworldspopulationpresumablyinfectedbyastrangeoutbreak,huntthem.TheseInfectedOnes(IO’s)seemmotivatedbyanobsessiontoreinchaoswithaneedfortastingblood.Thetwosurvivors;David(RonanQuarmby)andateenagernamedCameron(MarcoTorlage)formabondastheytrytofindtheirlostlovedones,buttheyoungmanhasasecretabouttheoutbreak–allisnotasitseems.AracefromanotherworldareorchestratingthisattackonEarthastheyhideintheskies,searchingfortheoneoutofsevenbillionpeople…searchingforCameron.ControllingtheIO’swhoaregrippedinabicameralstate,timeisrunningoutasthe‘Visitors’patienceiswaningandagreaterthreatfacesourworldiftheboyisnotfound.DavidmusthelpCameronfindhismom,Ellen(BarbaraHarrison)anddowhattheycantostopthealienattack.