Cult siren Lina Romay stars in legendary sleaze merchant Jess Franco's perverse women in prison flick about a cunning vixen who winds up in the big doll house after stealing a priceless cache of diamonds. A dangerous diamond heist has turned into a bloody shootout following a treacherous double cross. The traitor thought he gotten away scot free, but he was fatally blind to the greed of his murderous mistress. Later, after murdering her lover and hiding the diamonds safely away, the beautiful black widow is sentenced to an extended stay in a tropical prison. In a place like this, attempting to keep a million dollar secret can be murder. Now, in order to ensure that no one else discovers the location of the diamonds, the scheming convict will have to fend off the warden's seductive Sapphic spies while enduring the pain of whips, chains, and electrodes in the dreaded prison dungeon. Even if she should somehow manage to escape, greedy thugs working on both sides of the law are waiting to track her every move. If she retrieves the diamonds, she will most certainly be killed; if she continues to run, she must struggle to survive as a penniless fugitive. Will her body and mind prove strong enough to endure the agony and ecstasy of this hellish prison, or will she perish alone and brutalized in a darkened torture chamber?