Nanako's former coworker went on maternity leave and she was forced to temporarily return to work. She was Kokoro to be commuting to work for the first time in a long time, but... the molester took advantage of her weakness and skillfully attacked her sensitive parts. Even after changing her commute time, her sexless body gradually accepted his obscene acts as he continued to use his fingers. And, having fallen into the molester's trap, Nanako found herself getting on a crowded train in search of a molester...