Aftertheprematuredeathofherestrangedhusband,Emma(Winter)regainscustodyoftheiryoungdaughterIsla(Jones)andhopestorebuildtheirrelationshipaftermanyyearsapart.Butwhenanevilentitybeginstotormentthem,motheranddaughterareforcedtofacetheinexplicablepresencethatinhabitsthewallsoftheirnewhome.