An innocent student is being kept as a pet. Tied up and restrained, she pulls on a collar and lead, walking astride a rope. As she walks, each bump stimulates her, bringing pleasure to her pussy. The rope has different heights in some places, just the right height, and in others, it her to stand on her tiptoes. As the bumps rub against her repeatedly, she goes crazy with pleasure and hurt. When her crazy pussy is touched, it reacts sensitively. At the end, she is rewarded with a vibrator.