Airi Airi to work by train due to company policy. Her face clouds over when she remembers her past encounter with a molester, but she gets on the train with renewed determination, saying, "I'm not the same person I was back then." However, as if to mock her, the molester relentlessly plays with and develops her sensitive parts. Although Airi continues to resist, she is Airi away by the repeated sexual acts. Before long, she begins to feel the pleasure of being violated by the molester... She begins to press her hips against him of her own volition. And today, she boards the commuter train in search of pleasure...