Rebecca Chan couldn't believe it. First one of her students brought in what turned out to be a real magic lamp, then the genie that had been summoned had made her a fairy, then Principal Norwood had been turned into a satyr, then she had been shrunk down to no more than three inches tall, and now her boss and the genie were shagging in the school, which was otherwise empty because it had suddenly become a school holiday.
And to top it all off, she couldn't get inside to do anything about it; when the genie had shoved her out the window, some kind of for e field had gone up, preventing her from re-entering. But she couldn't just do nothing! This genie clearly had no restrictions and was happy to go about willy-nilly, transforming people who didn't want it and didn't deserve it. She to do something, but what?
She had a thought, and she somehow knew she could do it. Somehow, in the change, she had become aware of the existence of Fairyland. Non-fairies who went there, she knew, could never return to the human world. She had enough power to move the school to Fairyland; she didn't like the idea of Principal Norwood being stuck there, and she liked the idea of being stuck like this with no means to change back even less, but that genie was just too dangerous to be running loose, and after all, the principal had gone along with the genie's seduction.
Wishing she had the time to look for another way, Rebecca focused her thoughts into her wand. In the blink of an eye, the school building had vanished, the playground equipment and other facilities scattered around the edge of a lawn of lush green grass.
But what about her? Rebecca knew, somehow, that it wasn't in her power to change herself back into a human, and even if she could, she'd just teleported her workplace into another world altogether. Was she going to be stuck as a fairy for the rest of her life? It sure looked that way.
Flitting a story or two above street level, Rebecca slowly made her way home, feeling rather depressed about the situation she was in. She was soaring over a back alley when she heard a cat yowling in pain. Dropping down to street level she saw a teenage boy grinning maliciously as he threw objects at the poor cat. Rebecca was filled with righteous anger, and almost before she knew what was happening, she had stretched out her wand towards the jerk and hit him with a blast of fairy magic.
The boy didn't notice, and continued to laugh until his ears began to change. By the time he had noticed, they had moved to the top of his head, becoming thin, triangular cat's ears, covered in calico fur. He was visibly shocked as he reached up a hand to feel what had happened, but what really surprised him was when the hand came down also covered in fur up to the elbow, padded on the palm and fingertips, and tipped with retractable claws in place of fingernails.
"Oh my God," he shrieked, "what's happening to me!?" He didn't notice that his canine teeth had elongated into proper fangs, or that his tongue had become a bit thinner and rougher, but he'd find that out eventually. Besides, the more surprising change was in his feet, which he discovered when he lifted one foot only to have shoe fall completely off. It no longer stayed on because his feet had changed from human feet into full-fledged cat's paws, also covered in fur up to the knee.
He caught on enough to figure out what was next, and a four-foot tail shot out from his spine mere moments after he had pulled his pants down. He sighed and began to survey himself, realizing that the changes were over.
Except they weren't. As he stared down at his changed body, hair dropped into his field of view. But where his hair was black and coarse, this was fine, silky, and the same golden-tan as patches of his new fur. "What the hell?" he muttered, but suddenly noticed that his voice had changed to something much higher and softer, almost...girlish?
"Oh, no," he moaned, watching his body become softer and curvier, "no, I can't...I don't want to be a girl!" He began to panick in earnest as smallish breasts began to grow on his chest, his legs becoming longer and his face more feminine. He let out a scream of terror as his penis and testicles shrank back into his body, becoming a vagina, uterus, and ovaries. By the time her clothing reshaped itself into a blouse, bra, skirt, and panties, she was sitting in the alley, crying.
Rebecca surveyed her handiwork. It would be hard for this kid, but she had earned it, and the support Rebecca knew she would get from her family would help a lot in her adjusting. As for Rebecca, she suddenly knew what it was she was supposed to do. A newfound part of her personality was settling in place. No longer Rebecca Chan, elementary-school teacher, she was Becky the Transformation Fairy, existing to transform those who had earned it, whether by their good deeds or their bad deeds. The old Rebecca was still there as well, but she saw this as an opportunity to teach the kind of lessons she hadn't been allowed to as a teacher. With the new and the old in agreement, Becky flitted off gleefully in search of someone else deserving of a transformation.