"I don't know why I let you two drag me to this."

"C'mon, Tulirepo, they're paying us extra for three people! All we have to do is go in, test some stuff for them, and we'll walk out with fistfuls of cash!"

"Plus, you'll get to see us naked~"

Carmen winks at Tulirepo as her face turns fire-engine red. Laughing, Midori pulls them both into the lobby of the building. They walk up to the receptionist's desk, where a middle-aged, slightly pudgy lady is sitting.

"You three must be Midori, Tulirepo, and Carmen! We can start as soon as these forms are filled out. Thanks for helping us!"

The receptionist gives them each a clipboard, which they dutifully fill out.

"Um, Midori? Should I check the box for 'Additional testing'? It says they'll double our pay, but they don't specif-"

"Carmen and I already did. We just have to spend some extra time here, not a big deal."

"Well, if you two are doing it I might as well do it as well."

They bring the forms back to the receptionist, who smiles and tells them that someone will come for them soon. True to her word, they're called in before they even get a chance to sit back down. They're led to a well-lit, but empty room, where they're provided with a set of airplugs, and instructions on what to do.

The three of them strip, to Carmen's delight and Tulirepo's embarassment. Midori hands everyone an airplug before reading the instructions out loud.

"Place the airplug on your belly button, making sure it is secure, then open the valve. After you have completed these steps, please wait in the room until someone comes to collect you."

Midori places the airplug on her stomach, pressing it firmly until it sticks. Carmen quickly follows suit, with Tulirepo following shortly after. As they open the valves, a soft hiss fills the room. Midori waves a hand over her airplug, noticing that she feels air going into the valve. Tulirepo tries to cover herself up with her arms, but Carmen stops her.

"Ok girls, we've got a whole room to ourselves and a lot of time to spare. Midori, I know you know what I'm thinking."

"Oh, absolutely."

Midori and Carmen both turn towards Tulirepo with wicked grins on their faces as they pounce on her. Tulirepo makes a futile attempt to wiggle her way out of their clutches, but as Midori and Carmen kiss and lick her body, she stops trying to escape and lets them toy with her. Her moans are muffled as Carmen sits on her face, forcing Tulirepo to lick her pussy. Midori moves downward, spreading Tulirepo's lower lips apart as she uses her tongue to caress her folds.

As Midori and Carmen enjoy Tulirepo's body, they notice that her proportions are changing. Her petite chest swells as her boobs expand, jiggling every time Tulirepo moves her body. Her ass grows as well, becoming soft and pillowy. Carmen teases Tulirepo's larger breasts as Tulirepo begins to grow taller, gaining a foot of height.

Carmen mock-pouts as she gently pinches Tulirepo's nipples. "Aw, you're gonna make me jealous. When do I get bigger boobs?"

*Squeak*

All three of them stop as a loud squeak echoes through the room. Carmen rubs Tulirepo's boob again, and it makes the same squeaking noise.

"Midori, my skin feels weird. It feels like my entire body's falling asleep. And my face is-"

Tulirepo's sentence becomes incoherent squeaking as her mouth reforms into a O-shaped ring. As the skin around the airplug in her belly button becomes a shiny artificial blue, her squeaks increase in volume and her lower body quivers as she bucks her hips. Before she can climax, however, the wave of blue covers her pussy and forces her legs apart. Tulirepo lets out a few disappointed sounding squeaks before the blue wave begins to roll its way up towards her neck, and as it covers her arms they freeze into a L-shape, her fingers fusing together as her hands transform into mittens. Tulirepo's shocked expression stays as the plastic covers her face. Her eyes become dull as they transform into painted on decals and her hair turns shiny and synthetic. Seams form across her body as the airplug automatically closes itself shut.

"Wow, she really turned into a sex doll. It's a shame we only have a few more hours before they turn us back, though. Maybe if I ask them nicely they'll let me keep her like this?"

"Why stop with just Tulipero? Don't you want me too?"

"Who said I didn't?"

Midori pulls Carmen towards her, kissing her deeply. They can feel their bodies get stiffer as the airplug changes them as well, and they continue pressing their bodies together as their mouths turn into unmoving plastic holes. Squeaks fill the room as they slowly rub their bodies together. Carmen's belly turns dark red, while Midori turns bright orange. Midori and Carmen's squeaks intensify as their pussies are enveloped by the plastic and their legs involuntarily spread out. They're no longer able to balance themselves on each other, and they fall over. Midori lands on top of Carmen as the transformation spreads to her upper body, rendering her immobile. Their breasts and faces press against each other as their arms fold into a L-shape, their fingers fusing together just like Tulirepo's.

Carmen gives Midori one last seductive wink as her eyes turn into paint, leaving her face stuck like that. Midori's eyes glaze over as a sense of bliss fills her body. She relaxed as she felt a weight lift off her shoulders, her mind clouding over as the plastic covered her head. Her last thought before her transformation finished was that she wanted to stay like this forever.

Several Days Later

"So we can't change them back to normal? All the other volunteers were fine."

"Well, these three were the only ones to opt into additional testing." They point to a trio of sex dolls with foxy features, one orange, one red, and one blue. "We deflated them to move them around easier, but now they're not turning back."

"I see. Your team can keep working on it, but I personally wouldn't work on it too hard. The form they signed released us from any legal issues, so you don't need to worry about a lawsuit or anything."

"So I can keep them for myself?"

"You can do whatever you want with them. They're just sex dolls now."

The researcher grins as they deflate the sex dolls, folding them before packing each one into a separate box. "Thanks, boss. Permission to perform one more round of tests on these dolls?"

"Permission granted."