Feminized By My Nemesis

Sometimes, the man who's your greatest enemy, is the woman of your dreams. Super genius Doctor Alexandros Dyson earns his fearsome reputation from his secret volcanic island. As the most menacing threat the world has ever seen, the bald madman must be stopped before he can take over the world. Superspy Brian Tucker is a man's man. From his rugged good looks to his hard muscles, he's on a mission to save the world.
But nothing has prepared him for the likes of Alexandros Dyson or his gender bender nanites. When opposite sides of justice and gender meet, Brian (now Brianna) discovers there's more to the infamous doctor than meets the eye and to her new feminine body. His (now her) mission remains: take down Doctor Dyson. Resisting womanly pleasures and her experienced nemesis will prove far more difficult. if even possible.
Note: This is a stand-alone, male to female story with feminization and steamy scenes between a muscled villain and a newly feminized male.