[Hiyori Yoshioka Lesbian Debut!] To investigate rumors of illegal sex services operating within women-targeted massage parlors across Tokyo, rookie detective Hiyori Yoshioka teams up with her senior officer for an undercover sting operation. Posing as customers, the two infiltrate the establishment but are separated into different rooms, where they become entangled in increasingly compromising situations. The film depicts how the lesbian staff use their seductive, depraved tactics to break down Hiyori's resolve and pull her away from her sense of justice. Bonus footage includes behind-the-scenes scenes shot after filming, intensifying the experience.