Background of the movie is at a torture club within a prestigious female high school. Right after Yuzuki Muto (Noriko Kijima) entered school, she becomes a member of the Torture Club. The club trains students secretly to enter military and police fields as interrogation experts. Senior student Aoi Funaki (Haruna Yoshizumi), who is a member of the club, tortures members including Yuzuki Muto.—AsianWiki