After receiving a grant for you graduate thesis, you (you ) logs onto a video-chat site known as THE DEN, on a mission to explore the habits of its users. During one of her random video-chats, Elizabeth watches in horror as a teenage girl is gruesomely murdered in front of her webcam.

While the police dismiss it as a viral prank, you believes what you saw is real and takes it upon herself to find the truth. You life quickly spirals out of control as you gets pulled deeper into the darkest recesses of the internet. And eventually, you finds herself trapped in a twisted game in which she and you loved ones are targeted for the same grisly fate as the first victim.