Fumika Nakayama's first train-groping feature. Strong-willed office worker Fumika confronts a group of filthy men causing trouble on the train, angering them and making herself their target. They stroke her bare ass, crush her soft breasts and relentlessly tease her nipples. Too proud to cry out, she silently endures the sensations but climaxes from a degrading creampie. Even a resentful subordinate joins in, and she is surrounded, gang-raped and repeatedly bred by the men. Blaming everything on stress, she finally gives in to the pregnancy-fetish pleasure.