When young Nami is framed and falsely imprisoned, she must find a way to escape and exact revenge upon the man who betrayed her. Meiko Kaji (LADY SNOWBLOOD) leads the 1st ferocious film in director Shun'ya Itô's stylish must-see FEMALE PRISONER SCORPION saga. Contains strong language, violence and gore.

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.

Following her successful prison break, Scorpion begins this third episode in the series hiding out in a brothel. Her prostitute friend tries to keep her identity secret, but the brothel's madam discovers that Scorpion is the ex-girlfriend of the vice officer who killed her lover.

Nami is once again on the run from the law but is saved by an old classmate who works at a strip club. Through a subsequent conversation they discover they both have a score to settle with a particular crooked cop. However, Nami has doubts about ever trusting a man.