A female student relaxing on the rooftop is suddenly attacked in a crisis situation. Threatened with a knife, she is tied up by a violent assailant, rendered helpless as her shirt is pulled up from above, exposing her underwear completely. Humiliated and unable to escape, she pleads for help while the perverted man torments her. The more she struggles, the tighter the ropes constrict around her body, intensifying the sensation of being bound. Her cries for help go unanswered. She finds herself in a desperate, life-threatening predicament.