In the aftermath of the Heath Oslo incident, the once-secret US-Japanese anti-terror group CIRS is now known to the public. Reborn as SORD (Social Ops, Research & Development), it focuses on training a new breed of operatives to safeguard the nation against looming threats. Among the scattered specialist training schools across the country stands Mihama Academy, resurrected from neglect to mold a diverse student body with unique talents. Here, girls deemed misfits are armed with guns and ammunition, thrust into perilous covert missions without regard for their own safety. Determined to carve their own paths, these students embrace a life of danger, guided by the belief that survival demands strength and self-reliance. As they navigate through a world that seeks to exploit them, these resilient girls face an uncertain fate, bound by their unwavering choice to wield the power of the gun.