Tsumugi, who works in printer sales, is timid, weak-willed, and a bit clumsy. One day, while cold calling at a sales call, she is approached by a man named Nakata, who ends up having sex with her. Nakata's company is in financial difficulty, and perhaps due to the high stress he has accumulated, his personality is warped, and he pins down the weak-willed Tsumugi as an outlet for his stress. Having exposed her lewd nature to Nakata, Tsumugi offers her body and Kokoro to Nakata's colleagues...