Karl Anderson was the principal of the school attended by Raven and her friends. He was a stern man, believing in order and discipline, and did not tolerate unusual behaviors in his school.
Since he didn't want to be disturbed, he had locked the door to his office. Or at least the main door, because there was another door leading directly to the vice principal's office. So Mr Anderson was quite surprised when he saw a woman, wearing man's clothes tat didn't fit her, coming from the second door. The woman was gorgeous, with large breasts and a pretty face, but she was walking in an odd way, as if she had something massive between her legs. Her face was also familiar, but Karl couldn't guess if they have already met. But what Karl Anderson didn't like was the woman's clothes, that were just weird. It was like she was wearing a man's suit, and it looked ridiculous.
"I'm sorry, do I know you ? I told my secretary to not be disturbed."
"This is just a matter of minutes" said the woman. Her voice was sultry. "Then, we can work together, as we have done for the past 10 years."
"I'm sorry, but I am quite sure we never worked together. I would have remembered you."
The woman spit the bean: "I am Mr Tedds ! Or at least I was. I'm Sarah Tedds, and I know you want this school to be special, to be unique. Well, I have something to make this school unique. To give the best education, and the best bodies, to the boys and girls we are in charge of."
Karl Anderson finally understood: "Mr Tedds ? But ... You're a woman! How ... ?"
"Not exactly a woman !" said Sarah Tedds as she removed her pants and showed her erected cock.
"This is inappropriate, I shall.." Karl Anderson couldn't finish his sentence, as Sarah Tedds force her cock into his mouth and forcing him to suck it until she cummed inside.
Karl Anderson swallowed the cum and that make him horny. His own cock grew up to 10 inches. Sarah laid down on Karl's desk and offered her pussy to the principal's giant cock. Karl Anderson fucked Sarah Tedds while his body began to look less manly.
Karl was aware of the changes. He asked: "What are you ? What are you doing to me ?"
"One of our girls, Raven, she made me like this. It's a gift. She calls it the futa gene, whatever it is. But we are not selfish, we want everybody to have perfect bodies like ours. Picture this: this whole school, but with futa instead of boys of girls, wouldn't it be perfect ?"
"Yes ... that would be perfect" said Karl as his hair grew longer and small breasts formed on his chest
"futa students need futa teachers too!"
"Of course !" agreed Karl as his breasts balooned to I-Cup and his hips expanded
"And what about you ?"
"I need to be a futa too!" Karla's final change was her getting a wet pussy. With her dick, she cummed inside Sarah's pussy.
Just after this climax, the main door of the office opened as the secretary said : "Mr Anderson, I heard some strange noise, and ... "
The secretary was shocked by what she saw. It was like a scene of that porn movie she allways denied to have seen, the one with the shemales in a school. Except this time, it was real.
Karla said: "Miss Blanc, you are a loyal assistant. You deserve a promotion."
The young woman barely protested when Karla and Sarah undressed her. It was like a erotic dream. Karla fucked her pussy while Sarah fucked her ass until Miss Blanc grew her own cock and balls, and joined the ranks of Raven's futa army.