1920, rural Eire. Anglo-Irish twins Rachel and Edward share an odd existence of their crumbling household property. Every night time, the property turns into the area of a sinister presence (The Lodgers) which enforces three guidelines upon the twins: they should be in mattress by midnight; they could not allow an outsider previous the brink; and if one makes an attempt to flee, the lifetime of the opposite is positioned in jeopardy. When troubled battle veteran Sean returns to the close by village, he's instantly drawn to the mysterious Rachel, who in flip begins to interrupt the principles set out by The Lodgers. The results pull Rachel right into a lethal confrontation along with her brother - and with the curse that haunts them.