There have been nine kidnappings in Los Angeles, with people from a variety of industries, including priests (Mark McRae Marc Macaulay), prosecutors (Melissa Joe Hart Melissa Joan Hart), actors and club owners, who seem to have nothing to do with each other, while the kidnappings were carried out by one person, a man in a blue mask and black. The case alarmed Los Angeles, the police all went out, but could not find any clue. At the same time, in a dark and damp basement in every corner of the city, nine abductees ushered in the most painful moment of their lives. The masked men asked them to think about the reason for the kidnapping and then kill one person every 10 minutes until they found out why. The hostages argued fiercely, criticized each other, or reviewed the mistakes they had made in life. As time goes by, the verdict of death is getting closer and closer.