At Stella Women's Academy, the C3 Club finds inspiration in the military's pillars of command, control, and communication. Yura Yamato, a timid freshman, stumbles upon her roommate's extensive collection of military paraphernalia, sparking her interest. Drawn into the world of airsoft by the club's members, Yura's initial defeat in a practice match ignites a newfound passion for the game. Encouraged by Sonora Kashima, the club's president and her roommate, Yura joins the C3 Club and discovers an unexpected talent and love for airsoft. As Yura delves deeper into the sport, her life undergoes a significant transformation, teetering on the edge between fulfillment and potential downfall.