On the planet of Arous, Taura (Sandy Brooke) leads a group of dwarf miners in rebellion against the international empire.  The empire sends Captain Bantor (Ross Hagen), Krago (Michael D. Sonye), and the Inquisitor (Aldo Ray) to capture Taura and put down the revolution.  When Bantor attempts to attack Taura, he sticks his hand in a volcanic acid plume and screams as it dissolves.  Taura is arrested.  Judge John Carradine sentences her to a term on Vehemence, a spaceship that serves as an intergalactic women’s prison.

Star Slammer is a Women In Prison film that happens to be set in space.  Taura makes an enemy of the sadistic warden (Marya Grant) and her henchwoman, Muffin (Dawn Wildsmith).  Taura also befriend Mike (Susan Stokey) and the two of them plot to overthrow the guards and make their escape.  When the now crazed Bantor boards the ship, Taura sees her chance.  Meanwhile, the prisoners have to deal not only with pervy guards but mutant rats.

Legend has it that Fred Olen Ray had rented Roger Corman’s New World Pictures studio for four days so that he could shoot some extra scenes for his film Biohazard.  Ray finished his Biohazard work in one day and then spent the other three days filming promotional footage for the film that would become Star Slammer.  He used props that were left over from Galaxy of Terror and was able to get Aldo Ray to come in for a day so that the footage would feature “a name.”  Producer Jack H. Harris looked at the footage and put up the money to shoot the rest of the film on the condition that Ray change the title from Prison Ship to Star Slammer.

Amazingly, the resulting film itself is not that bad.  Ray used the outer space setting as a way to both indulge in and poke fun at the common tropes of the Women In Prison genre and Sandy Brooke and Susan Stokey both turn in committed performances.  Ross Hagen laughs like a maniac and demands vengeance for his missing hand while trying to get his remaining hand on a mind control device.  The prisoners are kept in check by promises of prizes and free trips in return for good behavior.  A thoroughly deformed guard is promoted as a sex symbol and there’s a sharp wit to many of the scenes.  Star Slammer is much more clever and fun than anyone would have any right to expect it to be.