在战争后盛开的城市中,机械化改造的人类——"扩张者"成为了新时代的普及现象。科技公司 "贝琉连" 因此蓬勃发展,控制着整个城市的运作。随着扩张技术的进步,扩张者与一般人类之间产生了渐渐 widening gap, 并出现各种摩擦。 Over-expanded "Surplus Expanders" with excessive power pose a severe threat to societal stability. To address these issues, the government established an organization called EMS (Expander Policy Bureau), responsible for managing all matters related to expanders. This body found itself in a delicate dance of power with the mighty "Beryl Connect", leading to a covert and intricate relationship.
Amidst the chaos, our protagonist is a Surplus Expander named Qian 13, whose head takes the form of a left-spinning gun. He navigates life on the edge of danger by taking on various tricky cases as part of his "Treatment Room" duties. However, this precarious lifestyle undergoes a change due to an enigmatic "Kidnapping Case" that alters everything...