Sayaka is suddenly molested on a crowded train. She surrenders her body helplessly to the man's finger movements, and her highly sensitive reactions only drive him to make her climax repeatedly. He fondles her body obsessively, consumed by the pleasure he's drawing from her. During this, she's forced to give a blowjob and receives a creampie directly into her mouth in an ultimate act of domination. A part-time coworker who witnessed the scene beside her reveals his pent-up desire for Sayaka and invites her to a hotel. Their relationship immediately escalates into full-on sex once they arrive.