Later, when the house is surrounded by police, one of the attackers returns and picks up the camera, revealing that they are either part of law enforcement or posing as a police officer.The attacker fixates on the father of Lynn's child, who she is separated from, irritating her.Though Elizabeth notifies the police and calls Lynn to warn her, the message is garbled.The attackers bind Lynn and prepares to cut open her stomach, but abruptly leave, hiding the camera as they do so.She is chased by a number of killers, one of whom is a young man who she attacks, demanding to know where Damien is; he tells her that he is not there.She manages to escape to aboveground, bludgeoning other attackers before hijacking one of their cars, but crashes when blindsided by another member's car; she is removed from the wreck by the killers and dragged back to the complex.The movie begins with Elizabeth logging into a webcam-based social media site known as The Den, which allows users to chat with random strangers across the world, similar to Chatroulette.
Sally does not believe Elizabeth when the latter insists she was hacked, and informs her that her grant is suspended until further notice.
The stranger reacts aggressively to Jenni when Elizabeth is away from the webcam, and Jenni logs off.
Afterwards, Elizabeth's account is hacked, and her webcam is repeatedly turned on without her permission.
Elizabeth awakens in a room of a nightmarish, abandoned complex, chained to a wall with a Go Pro stapled to her forehead.
A computer is in the room, forcing her to chat with the abducted Damien, who informs her that there are many other attackers.