OUT OF STORY NOTE: Hey, I'm new to the site, and this is the first time I've ever written anything dealing with the medallion, so if the transformation seems wrong, well then that's why. At any rate, I don't think the details are that important to fuss over, so... on with the show:
Nicki, formerly Bertha, and originally Nick Masters, watched as her former girlfriend and now mistress, Megan, slipped the nefarious Medallion of Zulu over the neck of Linda, a woman with whom she'd had a fling, when she was a man. The medallion rested from her beautiful neck, one that she had once kissed. She felt a twinge of desire but she then glanced over at Megan and it left. This was her one chance of freeing herself from this curse. If she somehow blew it, she'd be cursed to that flabby body forever.
Nicki hesitated and then grabbed the medallion. She felt a shock, but refused to let go until the transformation was complete. She felt her flab melting away and her dress became baggy on her. She grew several inches. All the while, Linda's form swelled and burst from her clothes. As her face took on the flabby exterior of "Bertha," she was shocked, and bolted upright! Nicki - who by this point was halfway to being Linda - gasped in fear, but would not let go. Linda, meanwhile, took one deep breath and then was shocked into unconsciousness by the feeling of being unwittingly transformed.
This gave Nicki pause. Was it right to transform an unconscious woman, against her will? Well, it didn't matter to her now, she had come too far. Many minutes passed and the weight drained from Nicki's body, and her frame became svelte and beautiful. Meanwhile, the once-radiant Linda became an obese mass tied to a chair. Finally, the transformation completed, and the beautiful, naked Nicki, who appeared to the world as Linda, fell to her knees.
"Oh, Nicki," Megan said, "I'm so sorry for the way it has had to turn out."
"Ahh," Nicki stammered. She swallowed hard - her new vocal chords were far more delicate than the ones she'd been using, "I'm so sorry, Megan... I'm so sorry."
"I know you are, sweetie," Megan offered some clothes to the nude Nicki, drenched with sweat. This transformation had been quite a work out. "But I have to warn you. This body is only a temp. Nicki, what you did was wrong, and I don't know if I can ever forgive you. But one thing's for sure: I can't look at you in that body without wanting to punch you in the face."
Nicki dressed herself as Megan spoke. The novelty of having a vagina had worn off for her, but this was the first time she'd ever felt sexy.
Megan continued, "Nicki, I'm going to find you a new body. A male one. That way, I can truly understand how I feel. There's a reason I didn't just cast you out into the world. Not because it would be cruel, but because deep down, I still don't know how I feel."
Nicki understood, and was grateful that her excursion as a woman was about to come to an end. They now had two tasks: find Nicki a male body, and do something about the 400+ pound Linda passed out in the chair.