Posh, manipulative and unscrupulous woman Lena Trent has been convicted of murder of her rich husband. She's sent to high security tough women's prison. Her cellmate Esther, the oldest convict there, warns her of Shirley, the convict who runs the place. Lena tries to use her charms on Shirley but it backfires in a brutal way. No Lena must find a way out before Shirley beats her to death or worse. She tries to charm the warden, who agrees to assign her work duties so she can have as little contact with the general population as possible. She uses this to try to escape. She fails and the warden gives up on her. Shirley finds her and beats her up worse than before. Lena's only way out now is to abuse the trust of the naive elderly prison mortician who needs an eye operation. This will be her final escape but unfortunately not in the way she thinks.