As soon as Fiona's gaze touched Sam's gryphon body, her eyes glazed over and she began to slowly approach him. Sam is a bit unnerved by this, but he figures that whatever is happening is all part of fulfilling Fiona's desires and decides to let whatever is happening run its course. When Fiona reaches Sam she reaches forwards and wraps her arms around his neck, sending shock-waves of pleasure through both their bodies. Still in a trance, Fiona then readjusted her position so she could swing herself up onto the Gryphon. When Sam realized what she was doing, he crouched down as low as he could and used one of his forelegs to lift her onto his shoulders.
As soon as Fiona was mounted atop him, sparks began to shoot through Sam's body. Just like when he changed before he felt desires and instincts run through his head, but these ones were different from before. They still showed a pride of women, gravid with eggs, but now Fiona wasn't among them. Before he could think on these new images, Sam felt an explosion of sensations coming from where Fiona was riding him. Wanting to see what was happening, Sam attempted to twist his body so he could see Fiona, but the place she was sitting happened to be a blind spot. Unable to get more than a passing glance at his rider, Sam remembered that Fiona had a full length mirror in her bedroom.
After squeezing his feral body through the doorway, Sam is finally able to get a look at what is happening with Fiona. At first he doesn't notice anything wrong, but after a while he realizes something. Fiona's legs were missing. In a panic, Sam lowers his body to get a better view, but when he sees what has happened to Fiona he lets out a squawk of shock. Fiona's hips had seamlessly fused with his shoulders.
Before an even greater panic can set in, Sam once again finds his mind assaulted with images. In these ones Fiona is a gryphon-taur, Sam's feral head nowhere to be seen. He saw her swooping down on a woman, carrying her off to become part of her pride. He saw a woman getting fucked by Fiona's leaning shaft, her place in the pride solidified as she is filled with Fiona's seed. He saw a room filled with women, all of them bloated with eggs and at the centre was Fiona, passionately making out with a woman as two others service her cock.
When Sam returns to his senses he finds that Fiona has leaned forward, her arms wrapped around his neck. He immediately begins to feel his head being absorbed into Fiona, her tiny human torso expanding as it engulfs him. With his head almost completely absorbed, Sam begins to wonder why he isn't afraid of being consumed. It isn't until the moment after his head is completely gone that he realizes why. It wasn't just Fiona in all of those scenes, he was still there, inside of her.
A powerful climax rips through their body as Sam's vision returns, now able to see through Fiona's eyes. Orgasm after orgasm washes over their body as their cock spews out load after load of cum, painting the floor of Fiona's room white. The rapid-fire orgasms seems to have snapped Fiona out of her trance, as she begins to let out a long rumbling moan.
Almost half an hour later the climaxes cease, the griffin-taur's hearty balls drained. Fiona, now completely back to her senses looks at her body, as the memories of what happened came flooding back. Sam meanwhile uses the opportunity to notice how their body had changed. Fiona's torso was more muscular, a six-pack visible on her belly. Her breasts had also grown larger, now significantly larger than her head. Sitting between her breasts was a feathery crest, and her ears had become like pointed cat ears, now sitting on top of her head as they subconsciously swivelled around.
As Fiona began to freak out, Sam realized what he was supposed to do. The perfume was supposed to turn him into the perfect partner for Fiona, so he reasoned that he was given this form so that he could awaken her latent desires. Fiona must have, deep down, wanted to become a powerful gryphon-taur, to mate with dozens of women and have them bear her eggs. But something like that was impossible without magic, so Fiona had repressed her desire and lived her normal, human, life. Sam now understood what he had to do and luckily he had the ability to act upon it since he retained control of what was once his body.
Fiona's panic intensified when her lower body began to move on its own, the realization that she had no control over it only just now dawning upon her. Sam walked out of Fiona's room, determined to find her first mate and breed her to show Fiona the wonders of their new body, their leonine balls already filling with new seed.