"Kurutta Kyōtō Danzai no Gakuen" is set in a dystopian future where society is governed by a rigid class system, and education is tightly controlled by authoritarian forces. The story unfolds at a prestigious yet oppressive academy, where students are subjected to strict discipline and surveillance. The academy serves as a microcosm of the larger societal hierarchy, with students divided into factions based on their social status and abilities. The narrative centers on a group of rebellious students who challenge the institution's oppressive regime, seeking to dismantle the system from within.

The protagonist, a transfer student with a mysterious past, becomes the catalyst for change. Upon arriving at the academy, they quickly uncover the dark secrets behind the institution's facade of order and excellence. The school's administration enforces its rules through a combination of psychological manipulation, physical punishment, and advanced technology, creating an environment of fear and compliance. The protagonist forms alliances with other disillusioned students, each harboring their own grievances against the system. Together, they organize covert operations to expose the academy's corruption and rally their peers to resist.

Key characters include the stoic class representative, who initially upholds the academy's rules but gradually questions their morality; a tech-savvy hacker who provides critical support by infiltrating the school's surveillance systems; and a charismatic rebel leader who inspires others to join the cause. As the group's actions escalate, they face increasing retaliation from the administration, leading to intense confrontations and moral dilemmas. The narrative explores themes of individuality, resistance, and the cost of freedom, as the students grapple with the consequences of their rebellion.

The plot is driven by a series of escalating conflicts, including sabotage missions, ideological debates, and personal betrayals. The story delves into the psychological toll of living under constant oppression, as well as the bonds of camaraderie that form among the rebels. The academy's true purpose is gradually revealed, tying its oppressive practices to a larger conspiracy aimed at maintaining societal control. The series concludes with a climactic showdown between the rebels and the forces of authority, leaving the fate of the academy and its students uncertain.