Respectable and refined young lady Ai suddenly undergoes a drastic change, surrendering herself recklessly to men's violent desires, ultimately descending into depravity by indulging even in the humiliation of her own brother. Unwilling to tolerate her outrageous behavior, her father hands her over to correction specialists who imprison her, subjecting her body and mind to torment through rope bondage torture, forcing her lewd perversions into submission. This film dramatically portrays Ai's suffering, her psychological transformation, and the brutal days of merciless discipline.