Hikari is a sex slave to an older man named Ume-san. Despite her slender body, she has big breasts and is a sex doll that shyly follows Ume-san's instructions with a troubled look on her face. "I'm a pervert who gets pleasure from being used by men as a sex slave," she confesses with a dreamy look in her eyes. Hikari is restrained and attacked with a vibrator, spanked, and enjoyed by Ume-san as a toy. Hikari is presented to some creepy men, who splash dirty semen all over her masochistic face.