Amothermovesintoanoldfamilyhometoundergoarigoroustreatmentthatshehopeswillhelpherautisticdaughtercommunicate.Thetherapyseemssuccessfulwhenthegirlmiraculouslybeginstospeak.However,shesoondiscoversthatherdaughterhascomeintocontactwiththetorturedentitiesoftheplace,whoreturnfrombeyondtocollectadarkdebtf...