In the autumn of 1985 a shocking and mysterious incident is found by police in an isolated mountain hut in the Balkan Forest. Stephen and Dora welcome guests Vasil and Nadia for a holiday at 'Roseville', set in a remote area deep in the woods. Stephen's American friend George (David Chokachi) also joins them for what turns into more than they bargained for... Disturbing nightmares and strange goings-on begin to occur turning this wild getaway into a frightening ordeal. Vasil's presence in the hut seems to unlock a series of unexplained events that will test the sanity of all. Facing the dark horror of their own fears, an invisible force is attempting to control them, lurking in the dark and quietly knocking on the door to their minds.