TheplotofthefilmseesaU.S.militaryveteran—SergeantRickPedroni—returnhomechangedanddangerousafteratourofdutyinAfghanistanwherehesufferedanattackbyamysteriousforce.WhileofficialsdismisshisbehaviorasPTSD,andordertraumatherapy,Rick'swifeKatediscoversherhusbandhasbeenpossessedbyamalevolentspirit.Katehastoraceagainsttime...