Zach had gone for a stroll deep into the woodlands, looking for adventure and new sights, when he was suddenly accosted by dark forces. He felt a strange force swell around him, and suddenly he couldn't move. He tried, desperately, to strain against the magical binds, but it was useless. That's when he saw her — the witch. She was tall and thin, with curves that seemed to mesmerize him. Her eyes were a piercing, icy blue, and her hair was dark and wild. She smiled wickedly as she approached him, her teeth flashing in the flickering light of her ancient brazier. The witch cackled with delight as she circled around him, inspecting his body as if it were a prized possession. Then her expression changed. Pointing an accusing finger in his direction, she declared she was going to turn him into something...different. Zach begged for mercy, but the witch just cackled all the more sinisterly. She told him her plan — to transform him into a fat cow-woman hybrid. And so she began her spell, chanting words he couldn't understand, her voice getting louder and louder as her power surged.
He felt the magic begin almost immediately, his clothes tearing off his body as his flesh began to grow and expand. His skin became as soft as velvet and turned a soft shade of pink. His arms and legs quickly became more and more curved, as if they had been injected with cow hide. He felt his fingers thicken and his feet widen, turning into cloven hooves like his bovine counterparts. His hair grew longer and thicker into a mane, and his face stretched forward into a snout. His horns appeared along the backs of his head, spiraling like bullhorns. Zach never thought something could physically feel this strange. His formerly petite human body was now filled with so much more mass than ever before. Even the way he walked and ran was changed. The very ground beneath his hooves seemed to transform and soften, becoming muckier and muckier as he trod further. He embraced his new form, beginning to feel at ease in the new cow-human that he now was. However, the witch ruined Zach's new-found happiness by telling him that she hadn't quite finished with him yet. There was one more spell that she needed to cast on him — something that would really make him a big fat cow.
With gusto, she began her magic spell once again, sending soft pink hand pulses of energy into Zach's now wide, bovine corpus. Almost immediately, Zach began to feel heavier than before. His body was growing and bloating, fattening itself out like a layer of pure lard. The spell continued, and his belly began to double in size, frantically expanding out in all directions. Fat cells quickly grew along his belly, spreading outward to his sides, his back. Zach's hips were beginning to deform quickly; fat cells were forming along his hips and his ass, transforming them from the lean appendages of a chiseled male body into a set of soft, round curves. His whole body seemed to puff up all at once, like a balloon. It felt like the high he had experienced before — but amplified. Zach glanced down at his chest and was shocked to see that his male nipples were growing like never before, puffing out and turning into a pair of plump, sensitive breasts. They were changing rapidly, but Zach already knew what was happening. He was growing a set of tits. His breasts were soon big enough to need a bra; Zach could see the fleshy, pink bumps getting bigger, fatter, bigger still. Fat cells were also beginning to form along his hip line, giving him what would soon be an enormous ass. As the witch's magic continued to build like a tsunami inside Zach, he felt protrusions begin to form along his underside. The fat cells that were growing began to form out seemingly out of nowhere, studding the sides of his taut stomach. The passage of time trickled on as Zach's breasts continued to grow and grow, felt his torso swell outward, and felt his belly expand until it reached the border of his thighs. The protrusions that were forming under his belly soon reached a total of six, arranged in three rows of two. Zach knew what they were — this was the unmistakable formation of a cow's udders. Just as the last udder curled out of Zach's underside and hung on his belly, the witch's spell had reached its crescendo. His body was no longer endowed with sexy curves — he was downright obese. His body now reached almost 300 pounds. A set of sagging breasts adorned his chest, jiggling as he walked, and his newly formed udders hung low on his stomach. His hips were wide, just like a cow's. Just as well, his wide, disproportionate bulk-to-height ratio made it impossible to stand up straight. Exhausted, Zach fell on all fours, panting and sweating from the effort of holding up his enormous fat body.
Feeling triumphant, the witch announces aloud that she has now cast her final spell on Zach to render him frumpy, fat, dumb, and forever subservient to her — but not before she casts a spell that turns Zach into a woman. He/She feels an uncontrollable need swell up inside of her; she realizes's just a big fat cow-woman — and a dumb one at that. She is too stupid to resist, and all she knows is what the witch tells her. Zach doesn't even know her own name anymore. Her body feels numb beneath her layers of fat, but she still knows her newfound purpose: make the witch happy. Realizing she has done her job, the witch casts one last spell to make Zach even fatter and more obese to the point where he no longer even has to move; he can just sit around and eat whatever he desires to become even fatter. Her stomach puffs up with pressing heat as her fat cells multiply and spread, even changing the color of her skin to an even brighter shade of pink. She teases her clit with her enormous, fat fingers, and smiles as she whimpers and mumbles for more. There is nothing she desires more than to please her master; the witch turns and walks away, leaving her there to revel in her brand new life as a fat, stupid cow.