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!
| Actor | Role |
|---|---|
 Hitomi KozueMayumi Hôjô | Mayumi Hôjô |
 Yuri YamashinaFumiko Kusakabe | Fumiko Kusakabe |
 Naomi OkaYoshie Ôno | Yoshie Ôno |
| HHiroshi ChōPrison warden Takioka | Prison warden Takioka |
| HHisashi KawamuraJirô Misaki | Jirô Misaki |
| RRei MinamiKaoru Kagawa | Kaoru Kagawa |
| YYuki MinamiKazuko Ninomiya | Kazuko Ninomiya |
| AAsuka MiyazakiRumi Hamada | Rumi Hamada |
| KKen MizoguchiPrison guard Sugimoto | Prison guard Sugimoto |
 Hajime TanimotoNoboru Motoki | Noboru Motoki |
| KKyôko SaharaSahara, Kyôko | Sahara, Kyôko |