Sister Mary Discipline is the headmistress for an all girls Catholic College. Among her duties is disciplining unruly students. She really enjoys her job, and has more than a passing fancy for her charges. Her latest problem student is a new girl who has been creating problems and stirring up the other girls. Sister Mary calls the student to her office, where she intends to give this student some one on one attention. The girl plays tough, but Sister Mary has plenty of experience, and a quick sedative makes the student compliant for what she has planned. Stripped naked and restrained on one of the Sister's torture devices, the student is put through the paces as the Sister purges the student of her sinful ways. Finger and bristles tickle helpless skin as the student laughs uncontrollably. Not satisfied, the Sister moves her unruly charge to a new device, where she gives the student's upper body special attention. Tickling her with abandon, the Sister herself becomes aroused, and helps the student share her pleasure. Satisfied with her efforts, the Sister releases the student, only to have the now free student turn the tables on her and give the libidinous Sister a taste of her own medicine.