Command, control, and communication form the three pillars of modern military operations, serving as the inspiration for the C3 Club at Stella Women's Academy, which specializes in airsoft. Because of the club's specific focus, recruiting new members has been difficult, but the current cohort hopes to identify a talented sharpshooter among the incoming students as the school year begins.
Yura Yamato is a freshman with a timid demeanor that hinders her ability to socialize. She soon learns that her roommate, Sonora Kashima, possesses an extensive collection of military memorabilia and films, including a replica Desert Eagle. After a member of the C3 Club spots Yura acting out scenes from an action movie, she is pulled into a practice match. Although Yura ends up on the losing team, she finds herself surprisingly captivated by the thrill of the sport.
When Yura returns home, Sonora reveals she is the president of the C3 Club and extends an invitation for Yura to join. With Sonora’s support, a single additional match convinces Yura to officially sign up. Through her new teammates, Yura uncovers a previously hidden aspect of her personality and develops an unexpected passion for airsoft. However, as her obsession with the game begins to dominate her life, Yura steps onto a trajectory of significant transformation and achievement—a path that carries the risk of leading to her own ruin.