Yui, the daughter of a company president, is a spoiled schoolgirl attending an elite academy, born and raised in wealth, unfamiliar with hardship or filth. One day, she is suddenly attacked and kidnapped by Saishi, a former servant of her father. After repeated mistakes at work, Saishi was ultimately fired, fueling his rage and desire for revenge against the family—leading him to target Yui. To make matters worse, he hands her over to yakuza members burdened with debt, subjecting her to brutal assault. The story unfolds with a shocking turn of events as Yui's privileged life is shattered overnight, plunging her into a nightmare of captivity, training, gangbangs, creampie, bukkake, and relentless domination.