Shima Shiko selects her favorite female students under the pretext of training camps or extracurricular activities, turning them into masochistic girls. Her training to enforce obedience takes place not only indoors but also in outdoor pools and cages. Any sign of defiance results in severe punishment. The girls are subjected to spread-eagle restraints as their vaginas and anuses are thoroughly developed. They are penetrated with extremely thick dildos and carefully trained until they can climax on their own. Repeated humiliation play includes nose hooks, frog mashing, and forced urine drinking, as six schoolgirls in uniform awaken to their submissive desires.