The time and place are based on the game Swordsman Love III. It happened around the time of the Anshi Rebellion. The protagonist 0 was abducted by a spy training organization since he was a child, but he gradually became disgusted with the power and brainwashing of the organization. He was touched by another pair of senior brothers who pursued freedom but failed and were eliminated by the organization. Therefore, he conspired with the penniless protagonist 1 to organize and work as a security guard to overthrow the spy organization and liberate other brothers and brothers.