With the object of discovering the male accomplice of Hideko, a bad girl, Michiko, a police-woman, disguises herself and infiltrates a gang. Then in a reformatory, under the name of Suzuko, she finds a certain girl who is familiar with Hideko and from her she approaches a woman, named Keiko. One day, at a beer-hall, the police-woman meets Keiko who just finished a secret narcotics transaction and asks her about Hideko. However, with the sudden appearance of Saburo, one of the gang, her search fails, and an exciting pursuit begins. Later Keiko is found dead.
Cast

Kinuko Obata
Asako Kimura
Namiji Namiura
Suzuko / Michiko Segawa - Policewoman

Bunta Sugawara
Sugiyama

Shuntarō Emi
Kagimoto
Yōji Misaki
Tetsuzô Kawaharada
Den Kunikata
Yamamura

Terumi Hoshi
Keiko

Michiko Sakyō
Unknown
Toshio Hosokawa
Chief Inspector Andô
Kyōji Kokonoe
Kuribayashi
Masaru Kodaka
Unknown
Hiroshi Izumida
Shishido
Hiroaki Kurahashi
Unknown
Tadashi Masaki
Unknown
Yasuhiko Todo
Unknown
Kazuhiko Saeki
Unknown
Masaya Otsu
Unknown
Kazuo Harada
Unknown
Emi Aoki
Emi
Ayame Hanazono
Hedeko Nakata - Killed Woman
Akemi Nishi
Unknown

Kyōko Ōgimachi
Unknown
Reiko Akiyama
Unknown
Akiko Kujo
Unknown
Yumiko Matsubara
Midori
Yaeko Arai
Toshiko
Sumie Nobe
Unknown
Masako Fujimura
Female Teacher of the Girl Reform School