Yui is a married woman who has lost her husband and finds herself taken captive. In an attempt to rescue her, an undercover investigator infiltrates the cult alone but is captured instead. As a result, she falls victim to mind control and gradually descends into becoming a devoted follower. Under the cult leader's control, her body is exploited and manipulated, eventually forcing her to lure new members into the fold. Can Yui break free from the web of perverse brainwashing?