Aki, a married woman caught up in her husband's scandal, receives a call during a business entertainment event informing her that her husband caused a traffic accident, injuring clients and superiors. Wanting to support her husband, she visits the home of her husband's boss, Department Chief Abe, to apologize. However, instead of forgiving her husband, Abe forces her to offer her body in exchange for leniency. Afterward, under the pretext of helping with personal matters, Aki is made to come to Abe's house constantly. To ensure complete submission, she is fitted with a fixed vibrator belt, marking the beginning of her groaning, humiliating life as a sex slave.