A housewife trying to conceive, wishing not to burden her husband with pressure. Yet, feeling neglected and emotionally unstable lately. One day, she unexpectedly encounters a molester on the train. Worried, she asks her husband to accompany her, but he remains apathetic and falls asleep. In the end, right in front of her husband, she climaxes from the molester's touch. The sensation leaves a deep imprint in her mind, the pleasure unforgettable even after returning home. Today, she boards that same train again—her crotch tingling, heart racing, eagerly anticipating what might happen once more.