When Chelsea meets up with her estranged childhood best friend, Milla, she's unprepared for the events that follow. Milla, who is now a webcam girl briefly catches Chelsea on camera during one of her shows. Unbeknownst to her, Chelsea has now been exposed to a watcher who becomes obsessed and will stop at nothing to have her to himself.
In the fall of 1960, Father Thomas Riley and Father John Thornton were sent by the Vatican to investigate a miraculous event in an Irish home for 'fallen women', only to uncover something much more horrific.
What begins as an annual visit to their family grave-site quickly becomes a night of sheer terror as two brothers are unexpectedly forced to fight back against a sudden onslaught of violent assailants. Soon, eight complete strangers find themselves barricaded inside a rural farmhouse in an attempt to survive against the ever-growing army of murderous creatures outside.