Maddie is an average human female. Well...she WAS. Tonight, she became a stranger in her own skin.

Maddie was a regular at The Cerulean Room; an excellent little club in the red light district. She'd been frequenting the place for a year now with her best friend, Lucas; a shark incubus. The two of them were so much fun together that they quickly became the staff's favorite customers.
They were so well liked that, on the anniversary of their first visit, they were presented with a parting gift by the club's owner, Sapphire, on their way out. 
A waitress approached them both alongside Sapphire, offering a pair of wine glasses with some sparkling beverage.
"How would you two like to broaden your horizons, tonight?" the sultry red panda inquired.

Lucas eagerly took a glass, but Maddie hesitated. She was supposed to drive tonight, and she was already a little buzzed. Just a little bit, though. 
Surveying the human girl, Sapphire smiled at her.
"Not to worry, darling; it's not alcoholic." 
"Oh! Well, thank you!" 

Maddie eagerly accepted the drink, which tasted a bit like raspberry champagne. 
Sapphire smiled at them over her shoulder as she strolled back down the hall. 
"Think nothing of it, kids. I hope you have a memorable evening."

Lucas handed his empty glass to the waitress and chuckled.
"What do you think that was about?"

Maddie rolled her eyes, trying not to think about how hungry she was getting. Her roommate was making dinner tonight. 
"Who knows? let's get of here." 

The drive home was quick. The apartment building they both lived in was pretty close to the red light district, which was one of the reasons they visited The Cerulean Room so often.
Maddie waved as Lucas split off from her, heading to his apartment on the next floor. 
As Maddie stepped into her apartment, she caught what could only be the smell of her roommate's cooking; He'd made lasagna. 
"Hey," Maddie shouted, "I'm home! Something smells g-uhhhh..."

Maddie suddenly felt a vibration in her head, and a pressure in her chest. Perhaps she needed to sit down? 
Before she could reach the couch, an even more intense pressure hit her lower spine, and her whole upper body was forced to lean forward hard. She only just managed to grab ahold of the arm of the couch in time to keep herself from falling on her face. 
A shiver passed through her. She felt every goosebump on her entire body spring to life, and a strange tight feeling began to spread across her skin. It wasn't as bad as the pressure in her chest, but she could feel it all over. She was trembling. 

Something was wrong. Maddie knew that much. She needed to let her roommate know she needed help. 
Just then, a popping sensation hit her in the jaw, and it felt loose. Unhinged, even. And that tight feeling had spread to her face. 
"Hawwwwwwb muh!" she bellowed, uselessly trying to get her mouth to work like it was supposed to. 

Just then, her jaw suddenly snapped back the way it was. Or did it? It felt a little different, now. But it didn't feel loose, at least.
"Is everything okay?" Called her roommate, from the kitchen. 
"N-no, everything's not okay," she answered. Whew! At least her mouth was working.

She noticed that the pressure on her chest seemed to be gone, now. And that awful tingling sensation had passed. Was it finally over? Was she okay? 
With a grunt, she pushed herself up from the couch. She realized too late that her upper body felt much lighter than before, and she actually overshot. She let out a tiny gasp as she realized she was about to fall over backward.

But instead of falling, she was suddenly standing up straight and perfectly balanced.
How did that even happen? 
Just then, she felt her bottom brush up against her left foot.
Wait...what? 

She glanced down to her feet. A tail was brushing up against her leg. It looked over three feet long, and a shark fin protruded from it near the base of her spine. It looked pretty familiar; quite a bit like Lucas's tail, in fact. 
Hesitating for a moment, she carefully reached down to touch the end of the tail with her fingertips. She immediately felt a slight tingle travel up her spine.
She pulled her hand back and jumped.
"Ah!"

She took a breath. Reaching down again, she got a proper grip on her tail. She slowly rubbed her hand along the underside until she reached the base of her spine. The feeling of her fingers sent a powerful shiver up her back, and she couldn't help but giggle a little. 
It was real. And it was hers. Where the hell did it come from?

She realized her top was feeling a little loose for some reason. She moved to adjust it, only to realize that her chest was completely flat. 
"Wait, what?!"

With both hands, she reached into her tube top, which had never felt this loose before. She padded herself up and and down, feeling every every touch as her fingers caressed her inexplicably masculine chest. There were no breasts here at all. Not even any markings to suggest she'd ever had any. 
"I don't....where did my....OW! What the hell?!"

A sharp pain hit her in the crotch, out of nowhere. She felt the metal zipper in her shorts pressing against her junk, a sensation she'd never felt before.
She reached down to unbutton herself, but she hands froze when she saw the huge bulge in her crotch. 
That wasn't there, before. That had NEVER been there.
"W...what the...? Is that...?" 

Maddie hesitantly unbuttoned her shorts, and a fully erect cock sprang loose. 
She didn't want to believe it, but without even touching it she could feel the scratches along the tip that were left by her zipper. 
Curious, she reached down and gently poked the scratched tip. She immediately regretted it, as a sharp pain shot through her cock, tensing up her entire body.
"HNNG! Owwww...."

Carefully avoiding the tip this time, she reached for her crotch again. She felt the soft skin of her shaft and the delicate sack underneath. 
She reached further down, trying to find her pussy. But where her womanhood once was, she felt nothing but skin and hair. There was nothing else to be found, all the way down to her ass. Her pussy was gone. It had been replaced by this...this thing that wasn't hers. And yet, there it was. Her cock. This was her body, now. But how?!

Maddie suddenly felt the presence of her roommate just a yard away from her. He was staring at her, with an incredulous look on his face. 
It was then that she realized she was standing in the middle of the living room, fondling herself. 
She quickly fixed her shorts as best she could, blushing heavily. 
"Um, hi," the roommate said. "Who are you, and what are you doing in my apartment?"

To be continued.