In a massive, mysterious chamber, fifty strangers awaken to find themselves trapped with no memory of how they got there. Organized in an inward-facing circle and unable to move, they quickly learn that every two minutes, one of them must die…executed by a strange device in the center of the room.

When the President's daughter is kidnapped, it's up to an ex-marine to save her. The problem is that the terrorist leader has a lingering hatred for him, as he has been wrongfully blamed for the death of his wife and children. The action heats up, as the two mortal enemies confront each other with extreme violence.