Mayumi is sent to jail after brutally attacking her partner and his mistress. Sent to live in Cell 31, the women there couldn't be more different... they are very religious, sing hymns and discuss the Bible. A fight with a rival cell block starts a bloody and vicious war in the jail... one where the warden and guards seek vengeance on the women with brutal torture and sexual humiliation. When a new inmate arrives and Mayumi recognizes her, all hell breaks loose!
as Mayumi Hôjô
as Fumiko Kusakabe
as Yoshie Ôno
as Prison warden Takioka
as Jirô Misaki
as Kaoru Kagawa
as Kazuko Ninomiya
as Rumi Hamada
as Prison guard Sugimoto
as Noboru Motoki
as Sahara, Kyôko
