Private Atake Academy is an institution known for its strict rules and discipline, claiming to rehabilitate students with behavioral issues through special education. In reality, while maintaining a facade of rigorous guidance, the school harbors a shocking secret: the principal pacifies and reforms students by offering her own body to them. Unaware of this truth, Riko is appointed as the principal's successor and begins a new chapter at the academy. Ahead of her lies an unexpected turn of events and the unveiling of the school's deeply buried secrets.