Three years into her marriage, married woman Akari longs to have a child. However, her husband's busy work schedule has driven a wedge between them, and before she realizes it, their sex life has completely stopped. One day, she boards a train for the first time in a while to deliver something her husband forgot. The morning commute is packed as usual, leaving Akari unable to move, her body overwhelmed by the sweltering heat. Sweat drips from her big tits, drawing the lustful gazes of men around her. Naturally, this catches the attention of a molester, who soon targets her.