Chitose inherits her late father's hot spring inn but is quickly overwhelmed by his sudden death and massive debt. A middle-aged man claiming to be a relative appears, offering to pay off her debts. In return, he demands access to Chitose's voluptuous body—presenting an extremely disturbing condition. Though Chitose strongly resists the idea of recording humiliating acts in her father's inn, the man's cunning seduction and relentless pleasure torture gradually erode her will. Soon, she finds herself obeying his every command as her body and mind fall completely under his control, descending into an intensely degrading spiral.