A young woman is invited by her girlfriend, who lives in an English country mansion, to stay there with her. The estate, however, isn't quite what it seems--and neither is the friend who issued the invitation.

　　少女卡罗尔因她哥安德鲁的出乎预料的死亡，而跟她朋友罗伯特一起去英国，住在她嫂子菲奥娜家，她很快发现她的同伴卷入一个邪教，不幸即将降临到她身上......