Rio, a wealthy student council president and idol, finds herself trapped in a sadistic game orchestrated by her agency's president, Akitsugawa. While her childhood friend Mamoru attempts to protect her by gathering evidence of the abuse, his hesitation and failed plan only lead to further trauma. In a cruel competition for dominance, Rio is forced to choose between her feelings for Mamoru and the overwhelming pleasure imposed by her tormentor, ultimately falling prey to Akitsugawa's twisted game.