In a dimly lit classroom after hours, a stern professor finds a student's racy journal, igniting a fiery discipline session. The professor, a sadistic dominatrix at heart, ties the student to her chair, baring her curves for inspection. She teases the student with a gleaming dildo, making her wet and desperate. Spanking her flesh, the professor growls, 'This is what happens when you're naughty, girl.' She forces the student to suck her fingers, then fucks her with a strap-on, the student's moans echoing through the empty halls. Roughly, she flogs the student's body, leaving red welts, before binding her with rope and leaving her to squirm in desire and anticipation.