After a devastating terrorist attack strikes downtown Los Angeles, six government agents are forced to take shelter inside a heavily fortified safe house designed for emergencies. Cut off from the outside world and unsure who to trust, they must remain inside while the situation outside unfolds. As tension rises and communication becomes limited, the agents begin to suspect that the greatest threat may not be the attackers outside the building, but someone within their own group. With fear, suspicion, and pressure mounting, each of them struggles to determine who is loyal and who might be hiding a dangerous secret. In this intense situation, survival depends not only on skill and training, but also on uncovering the truth before it is too late.