在朝日村莢香担任風紀委員的学校里，她与转校生羽黒優菜成为了好朋友。刚开始转学时，羽黒優菜曾遭受同学的欺凌，而莢香以她强烈的正义感，帮助她走出困境，消除了欺凌。她是一个充满正义感的女孩

然而，学校内突然爆发了一系列着装更衣室和厕所偷拍事件，震惊了全校师生。面对这一系列不法行为，莢香毅然决然地展开了调查，希望找出犯人，还学校一个清白。而国语教师湯ノ浜唯和用務員鶴岡一途也加入了她的调查行列，共同搜索线索，却发现学校里出现了一些可疑的学生和教师。

随着调查的深入，一连串离奇的事件和怪异的行为逐渐浮出水面。莢香和她的伙伴们不得不面对一个个谜团，揭开隐藏在学校背后的秘密。正义感和友谊成为他们面对困难时的支撑，他们决心要挫败犯罪分子的阴谋，拯救学校免受威胁。

At the school where Asahimura Chika was the discipline committee member, she became good friends with the transfer student Haguro Yuuna. Yuguro Yuuna was bullied by her classmates when she first transferred to another school, but Chika helped her get out of the predicament and eliminated the bullying with her strong sense of justice. She is a girl with a sense of justice

However, a series of sneak shooting incidents in the dressing room and toilet suddenly broke out in the school, which shocked the teachers and students in the school. Faced with this series of illegal acts, Zhuxiang resolutely launched an investigation, hoping to find the culprit and return the school to a clean slate. The Mandarin teacher Yui Yui and the customer service worker Tsuruoka also joined her in the investigation, searching for clues together, but found some suspicious students and teachers in the school.

With the deepening of the investigation, a series of bizarre events and weird behaviors gradually surfaced. Luxiang and her partners have to face one mystery after another and uncover the secrets hidden behind the school. Their sense of justice and friendship became their support in the face of difficulties. They were determined to defeat the criminals' plot and save the school from threats.