You and I are junior lab technicians in a very secretive, very unorthodox laboratory. Our head Doctor has developed a compound called "bimbo serum". We're both very curious as to this mysterious and powerful compounds ability. Unfortunately, we don't have the clearance as techs - we aren't allowed anywhere near the experiment. Well, we won't take no for an answer! We sneak into the lab late one night to see what the "bimbo serum" is all about. That's when you, clumsy idiot that you are, manage to spill it all over yourself! You immediately start to mutate, changing from a male to female. Unfortunately, you didn't get enough of the serum in your system to complete the transformation and despite being a fully formed woman... your cock and balls are still attached. We can't let the Doctor find out about it! We'll be in big trouble! I decide the only thing to do is neuter you like a mutt so that you can live out the rest of your days as a girl in order to keep our little mishap a secret...