He was a powerful and strong man. In fact, he was deadly. After messing with the wrong group, a hit went out on his son and his son's life was put in danger. Not able to go to the police, he called upon his friends and they offered him an escape where he would be safe until everything was settled.
What the son didn't know was he was being sent to a city outside of the states where only women are allowed due to their decision to remove men from their lives, either due to abuse and their own need to hide, or their general dislike of men. To live here, he is forced to dress like a woman, which isn't hard since he has a lanky frame by nature. A wig and some makeup later, he's quite the pretty girl.
He, unfortunately, has to have a job, and the only one safe to work is a maid's job in the house of a powerful woman. She's quite attractive and seductive by nature, and he can see a problem quickly. Not only is she attractive, but she is stubborn and prideful, making her a near female equivalent of him. She also knows he is a man, and tells him to be her slave or she will reveal his secret.