While on a hunting trip in the isolated wilderness, a father and his adopted teenage son are turned into the prey of unknown assailants. They are unexpectedly joined in their fight for survival by a stranger who reveals the disturbing truth about the son's biological father, an international crime lord, and why that crime lord has sent trained assassins to kill the teenager.
When former LAPD officer Brett Anderson takes a job as head of security at an old apartment building in Bulgaria's capital, Sofia, he soon begins to experience a series of bizarre and terrifying events. Once he begins to delve deeper into the building's sinister history and investigate its shadowy owners and past employees, Brett soon uncovers a malevolent force nestled deep in the bowels of the building that will do anything to be set free into our world.