A mysterious stranger tells the twisted tale of seemingly unconnected strangers caught in a series of otherworldly events whose lives will change in incredible ways forever.

Detective Ray Beckett seeks the aid of homicide suspect, Taryn Barker, in rescuing his daughter from a demonic force.

Mary, a precocious high school senior, longs to be a cop. When a classmate dies and the case remains unsolved, Mary becomes obsessed and gets involved in the investigation.