Detective Steve Fischer was as tough as they come. But when he goes to the scene of a robbery at a pharmaceutical company, he winds up being injected with an experimental drug before he's shot in the head by notorious gangster Artie Luther. Steve doesn't die. Instead, the experimental drug causes Steve's body to regenerate as that of a young woman. Now as she tries to adjust to her new life, she sets her sights on repaying Luther and his cronies.