Ryokichi Ibuki is a clerk who learns company "top secrets" and becomes an industrial blackmailer. Kaoru Koizumi, a confidential secretary in love with Ibuki, reveals her firm's plans to him. She resigns when Ibuki blackmails her employer but Ibuki gains another spy in Ayuko Ichinoi...
| Actor | Role |
|---|---|
 Jiro TamiyaRyokichi Ibuki | Ryokichi Ibuki |
 Yukiko FujiKaoru Koizumi | Kaoru Koizumi |
 Hideo TakamatsuLawyer Kiyohara | Lawyer Kiyohara |
 Bontarō MiakeNot listed | Not listed |
 Kyū SazankaExecutive Managing Director Ishigami | Executive Managing Director Ishigami |
 Yūko HamadaAyuko Ichinoi | Ayuko Ichinoi |
 Yuko YashioSanae | Sanae |
 Mayumi KurataMichiko Fujiwara | Michiko Fujiwara |
 Rieko SumiSetsu Tokumitsu | Setsu Tokumitsu |