Ayumi, a seasoned investigator who has solved numerous difficult cases, receives an order to solve a missing persons case. The missing individuals were last seen at a certain bar, so Ayumi infiltrates the establishment as a customer. However, the bar turns out to be a hotspot for lesbians, and while trying to gather information, she approaches a mysterious woman named Hibiki, who drugs her drink. Ayumi loses control of her body and is violated. Torn between her 'investigator's pride' and the 'lesbian pleasure that corrupts both body and mind,' she ultimately descends into a hell of bondage slave training and lust...
