A woman wakes up locked in a small room with no memory of how she arrived there. Unable to escape, and tormented by a series of paranormal entities, she must uncover the riddle of who she is and how she got here.

A deranged female serial killer stalks seven young people whom phone a radio call-in show to discuss their darkest fears and a night-long game of cat-and-mouse is put into motion by the darkly sinister-looking murderess.

Four desperate bank robbers are forced to abandon their lucrative heist plans and become the reluctant heroes when two of their hostages turn out to be psychotic killers who won't stop until everyone in the bank has been ruthlessly slaughtered. As the police surround the building and the killers begin methodically executing the hostages.