Tonya Mane is abducted and thrown naked into a room with other thirteen people in this scary horror film. They are all strapped with an electric collar which they can't take off. None of them knows the reason for the abduction and soon, they start being murdered one by one. The murders are a mystery and they therefore begin to suspect one another. The host, keeps providing clues in form of small notes that will probably lead to a way out. As they all struggle to survive, bodies are continuing to pile up and Tonya might as well be next.