Yu, who works as a librarian at a library, commutes by train. She never thought she'd be molested on the train... and never thought it'd be by an organized group of molesters... Taking advantage of her timidity, the molesters escalate, coming to her workplace and home, going beyond molestation and escalating into rape. Ui's cries of the Kokoro go unheard as she is brutally gang-raped with creampies. The impregnation molester train has started to run wild and won't stop...