In the wake of a shocking crime, an ordinary woman is transformed into a fighting machine in this action drama straight from Japan. Matsu, known to the prisoners as Scorpion, is locked away in the bowels of the prison as revenge for her disfiguring attack on the warden. Granted a one-day reprieve, she attacks the warden again, which leads to more brutal punishment and humiliation. But her punishment provides an opportunity to escape, along with six other female prisoners. Their surreal flight from prison pits the convicts against the guards, the warden, and each other.