Yuu Asakura works as a librarian and commutes daily by train. However, one day she encounters an organized molester gang on the train. What begins as a brief incident quickly escalates, with the molestation spreading to her workplace and even her home. Her desperate cries for help go unheard as she is subjected to a brutal creampie gang rape. The runaway Impregnation Molestation on the Train surges forward without mercy, refusing to stop.