Ichi is a blind woman who roams about town with her shamisen (a three-stringed Japanese guitar), but she has exceptional sword skills with which she fights off yakuza and other villains.
After spending a year in solitary confinement, Matsu escapes from prison with six more convicts, followed by the guards led by the vengeful warden who wants her dead at all costs.
After being used and betrayed by the detective she had fallen in love with, young Matsu is sent to a female prison full of sadistic guards and disobedient prisoners.
