It was a quiet evening, for once. Brianna White wasn’t used to those. Ever since she’d become the Crystal Knight, her hours had been erratic and frantic - supervillainy wasn’t a nine to five kind of job, and that meant Brianna’s hero work wasn’t either. Today, however, was one she’d decided to put towards the office-work side of heroism; collating sightings of a villain, looking for strings of crimes that might be more than petty theft or arson, and so on; it was boring, tedious work, but it had to be done and in a way it was relaxing.

The door to Brianna’s home office swung open and Brianna didn’t bother to look. “I can’t go with you, I’m busy.” the heroine said with a sigh.

Lydia blinked with surprise, having just walked into her girlfriend’s office. “I didn’t even say anything yet, how’d you know I was going to ask?”

“You’ve spent the last half hour looking through my wardrobe, occasionally peeking into your bag to compare it with something,” Brianna said, looking up from her laptop.  “If I had to guess, either looking for something presentable at a black tie event, or a swimsuit and were seeing if I had anything matching yours.”

“Second one.” Lydia said sheepishly. “Samantha’s throwing a pool party and I was planning to ask you to come.”

Brianna… well, it wasn’t that she didn’t want to come. Spending some time with her girlfriend would be absolutely lovely. But… “I appreciate it, really, but I’m busy. It’s hardly glamorous, but you know as much as I do that the job isn’t all about the spandex and fighting villains.”

“Aww, you sure?” Lydia asked, “I think you’ve got some nice swimsuits, and I’m sure it’d be fun to hang out in a pool as big as Samantha’s…” Her tone was playful and a bit hopeful, but not forceful, which Brianna honestly appreciated.

She stood up from her desk and walked over to Lydia. “I’m sorry, but this isn’t something that should wait. We can have some fun together tomorrow morning, ok?”

Lydia sighed. “Alright… would have been fun, but duty calls and all, yeah?” she said, arms opening up for a hug goodbye. “If you finish early I’m sure they won’t mind you swinging by a bit late.”

Brianna hugged her partner right back. “I’ll try, but no promises. Have enough fun for the both of us, ok?”

Lydia nodded, and waited for Brianna to move back. She didn’t, though. “Hey, uh, Brianna? You can let go, you know…”

“I, uh…” Brianna sighed. “I can’t, actually. My feet just aren’t listening.” While she’d been hugging Lydia, her feet had stopped supporting her weight; that was all on Lydia now.

“What’s going on?” Lydia asked, worry clear on her face. “Do you need a hospital or something…?”

Brianna grimaced a bit. It didn’t feel… bad, really. Just strange. In a way she was unfortunately very familiar with. “No… no, it’s just a transformation.” she said after a bit. She hadn’t seen Morgan in a couple of days. She should have known that she wouldn’t be so lucky as to have a full week of uninterrupted humanity.

Looking down at Brianna’s feet, both of them could see the issue. Namely, that they weren’t really feet at all anymore. They’d swollen out of shape, stubby and cartoonish and huge.

When Brianna tried to put weight on them, they squeaked and she stumbled - they certainly weren’t made of flesh and bone anymore either. “What are you turning into this time?” Lydia asked, staring with fascination as the plastic-like effect traveled up Brianna’s legs, turning more and more of it to the same synthetic material.

“I don’t know… but knowing a certain someone’s sense of humor, I bet it’s something for the pool. Kinda surprised she didn’t turn me into a bikini for you…”

“Morgan?”

“Who else?”

The supervillainess almost habitually transformed Brianna; the Crystal Knight spent nearly as much time as an inanimate object as a living thing. Morgan didn’t really mean harm; as far as she was concerned it was a fun time for the both of them, and never did anything permanent since that would mean she wouldn’t get to transform Brianna again. But it did get annoying when she did it without warning… usually she made a point of being there for the transformation, though; was she somewhere, watching and giggling to herself but not wanting to get between lovers?

Whatever the case was, the continuing transformation certainly had the feel of Morgan’s magic. As the plastic moved up past her knees to her thighs, she felt the thick stubs start to move, pulling and no longer supporting any of Brianna’s weight at all. “Whoa! I got you!” Lydia exclaimed as she stumbled from the sudden shifting of weight. It was good that Lydia was as strong as she was, or they might have fallen over. Brianna’s legs pulled in, bending at the knee and locking into place next to her torso.

“Thanks- ah!” Brianna’s gratitude was interrupted as she felt the transformation hit her bottom. Like the rest of her, as her butt turned to plastic it thickened - but while her legs had mostly kept to the same sort of proportion, her bottom was ballooning outwards to absurd size. And it felt shockingly good as it did so - the sensation of her bottom stretching outwards nearly to the floor, and especially Lydia’s attempts to get a good grip, felt really nice… Brianna blushed a bit, trying not to be too noisy about how nice it felt.

This was probably assisted by the fact that the transformation hadn’t stopped to accommodate her surprise, but kept right on going up her waist and chest. As those parts turned to the same synthetic material as the rest of her, she noticed a strange, hollow feeling wherever it went; her insides were becoming empty of anything but air. It didn’t hurt - Morgan’s transformations never did, an additional hint at the culprit - but unfortunately, this meant that when it reached her chest, her lungs vanished, and her capacity for speech with them. She couldn’t see it but she could feel her back flattening and spreading. She was pretty good at visualization and had an idea of what she looked like at this point, and thus what she was turning into - her back had become a seat...

Her mouth opened in a silent shout of surprise as the plasticization finally reached her breasts. They began to rapidly swell in size, plastic stretching and squashing into Lydia’s bust as the other heroine tried her best to keep a grip on her girlfriend. It felt good, especially that squishing and squeezing of her air-filled bust. She couldn’t talk or make a noise anymore but she could still blush fiercely at the sensation.

Lydia did her best but she couldn’t keep a hold of Brianna anymore. Even though she was more air by volume than anything else, she had still distended and distorted enough to be awkward to hold even if she didn’t weigh all that much. Thankfully, that same light and airy composition meant that rather than falling hard she instead bounced a little before coming to a stop, none the worse for wear. “Sorry, sorry,” Lydia quickly apologized, before continuing to watch the transformation with undisguised fascination and more than a little enjoyment. To Lydia, the transformations were interesting and novel - she’d only been transformed a few times, and seen Brianna’s new forms a few times, but she rarely saw the process in progress. “Wow… she’s really thorough, huh? If I hadn’t watched it happen it’d be hard to believe you were human at all…”

Brianna rolled her eyes - something she wouldn’t be able to do much longer as the plastic creeped up her neck. She loved the woman, but maybe Lydia liked this a bit too much. “Well, I can tell what she made you into…” Lydia said. “It looks like she’s turning you into a pool toy. Kinda appropriate, huh?” Lydia blushed a bit as she spoke, and Brianna had the feeling that she was enjoying this for more than curiosity. She rather obviously found watching the transformation - seeing Brianna turned into a sexualized, exaggerated caricature of herself - to be kinda hot.

Any response from Brianna, even in expression, was put a stop to by the fact the plastic claimed her face. A hard plug stopped up her lips, to keep the air in, as the rest of her face froze into a blissful expression, her hair clumping into a single piece as it turned into the same material as the rest of her. From top to bottom, Brianna was no longer human - not a bit of flesh and blood left, just plastic and air. The last change was accompanied by a soft squelching noise, as the clothes she’d been wearing - which had melded to her body as she transformed, becoming a drawn-on design - changed to more resemble a swimsuit, leaving no room for doubt as to her purpose.

Lydia whistled softly as she knelt beside the newly made pooltoy, examining her thoroughly. She was actually surprisingly large - about the same height as Brianna had usually been (if you put her face-upwards at least) but a lot wider. “She even put you in the same swimsuit I’d picked for you… well, I guess we’ve got two options. I sit around and wait for Morgan to show up and ask her to turn you back… and probably get transformed for the trouble, honestly… or,” she smiled widely at this, “Instead, we can just go on with the plan I had earlier as if you weren’t such a busy-body, hm? After all, you’re a pool toy, so a pool party is the perfect place to wait out the transformation.”

Brianna sighed internally. Ideally she’d just get reverted, but it seemed that Lydia had other plans. “If you wanna head to the pool party, just nod for me, ok?” Lydia said cheerfully, and then nodded Brianna’s head for her. “Excellent!”

With that, she unplugged the stopper from Brianna’s mouth. The air rapidly escaped her with a high pitched whine, and she felt the distinctly odd sensation of deflating across her entire plastic body. She felt empty even more than when all she’d been filled with was air. She had about enough time to see the bag she was being stuffed in before everything was dark.

----------

Some time later - it was hard to tell, when it was pitch black and she was being toted around in a bag - she heard muffled conversation from outside the bag. She couldn’t make out what was being said, but she recognized the voices well enough. One of them was Lydia, and the other was her rival / friend Samantha Carlson… well, this was one she wouldn’t live down quick.

The bag was unzipped and she was abruptly brought back into light. “See? Like I told you!” Lydia was saying, as she held up the deflated Brianna for Samantha to see. “She wasn’t going to come at first - something about some work she had to do, you see. But when we were hugging goodbye she suddenly started turning into a pool toy. I don’t really know how I’d try and turn her back so I figured, what’s the harm in bringing her? She’s a pool toy, it’s a pool party, the logic checks out. Not really the way we’d aimed for, but at least we got her to come after all, huh?

The redheaded, pale skinned beauty looking back at her didn’t bother to hide the smirk on her face as she looked at her. “Ha! I bet that one must have been fun to see.” Samantha said. “I think I’ve got a pump here we can use to blow her up.”

A minute later, Samantha stuck the air hose into Brianna’s O-shaped mouth, fitting in easily with only a slight squeak of protest. Lydia started pumping, and Brianna felt the air filling her up again. It felt strange, but not bad - no, not bad at all, in fact it felt kinda nice. She couldn’t help but enjoy the way her body stretched to accommodate the air, or the way it felt swirling within her. She would be a bit embarrassed about it, but thankfully her plastic face simply kept it’s impassive look. In only a few pumps, she was back to the proportion she’d been at when they’d left, and Lydia stopped pumping. “This seems about right…” she was saying.

Samantha seemed to think for a moment, before shaking her head. “No, not quite… I think she could use a few more.” She moved the pump a bit, ostensibly for better positioning but clearly just so Brianna could actually see her pumping.

The first round had felt kinda nice - sort of the way a massage did, if maybe a bit of an intimate one. But when Samantha started pushing the pump down again, again, and again, Brianna could only be glad she didn’t have any vocal cords - if she had, she’d have been moaning loudly in front of everyone. The air rapidly filled her, her bust swelling outwards even more than it had before and her bottom following suit. Each breast was bigger than her head now, and not by a small margin, while her butt swelled so much that if one was sitting on her they’d hardly have to lean back. It felt so good that for a while Brianna forgot entirely about her situation and location - all that mattered was feeling her plastic strain to contain the air being pushed into her, the feeling of her body swelling to fit it.

She was coming down from that high as she heard Samantha laughing a bit to herself. “Wow, she’s made of some sturdy stuff… I can’t believe I was able to pump her that big.”

“Whoever changed her didn’t want her to be easy to pop, at least.” Lydia agreed. “Man, if she had this size in human form I’d worry for her back…”

“It’s kinda sexy though.” Sam noted, taking a nice eyeful of Brianna’s new shape. “She’s not bad to look at.”

“She’s always sexy! ...But you’re not wrong, if she’s going to be a sexy pool toy, then might as well go all the way, right?”

The two chatted away as they slid Brianna into the pool. They did a quick round of rock-paper-scissors for who got to sit on her first, and Scarlet won it. The woman made a show of struggling to get on, gripping at the exaggerated bust and bottom of the pool toy and making Brianna internally squeal (and externally squeak) with pleasure from the sensation. She made herself comfortable, legs stretched out to either side of the toy’s head while her head lay back on Brianna’s plump rear end. “Ah, this is the life, isn’t it?” she said to Lydia, “A nice pool, a bunch of friends…” she waved to some of the other attendants of the party at this, “And some time to relax without a care.”

“It is nice,” Lydia agreed, “But I wish Brianna could join us. She could use the time to relax, you know?”

“Ah, but she has work, doesn’t she? Nice of her to let us use this pool toy so she could be here in spirit. She’s way too serious, though. She could stand to cut loose sometimes, or even just take a break.”

The two chattered away as if they’d forgotten that Brianna was floating right there with them, and Brianna wished she could roll her eyes. Ha ha, very funny, not at all obvious.

For a while Scarlet was on top as Lydia pushed the toy around, until it was Lydia’s turn to ride. She slid on a bit more gracefully than Scarlet did - but chose to orient herself the opposite way, with legs resting on Brianna’s butt while she lay her head on one of her beach ball sized breasts, arms wrapping around. This… felt surprisingly nice, actually, feeling Lydia’s chest pressing into her seat, her head on her breast…

The night wore on and Brianna tried to enjoy herself. Maybe they were right and she did need to relax, and it was nice to spend some time with friends (especially a girlfriend…) although she’d have much preferred to be made of something other than plastic and air when she did so. A pool party wasn’t too much fun when all you were able to do was float around without any control over where you went. It was especially irritating when they made a show of lending her to a pair of other partygoers without remembering who she actually was while they went to get drinks, and she could do nothing but get pushed around and once have a couple make out on top of her.

A few bits that were more in the middle of that experience were how some people really liked how she looked, and didn’t realize she was a real person - to them, she was just a sexy pool toy and that meant it was fine to grope and squeeze at her breasts and butt. A pair of them even decided to test just how hard they could squeeze, and were surprised to find that as hard as they did she’d just pop back to shape. ...She didn’t want to admit how nice that had felt, but she couldn’t pretend that she hadn’t enjoyed people getting handsy.

The night was dragging on, and most of the partygoers had left. Samantha and Lydia staggered back to where Brianna had been left by the last partiers to use her, both clearly drunk off their asses. “I… I gotta get this back home now…” Lydia muttered.

“Nah…” Samantha shook her head, speaking slowly to try and not slur her words too much. “Why don’t… why don’t you stay the night. Safety and all.”

Brianna was silently thankful to Samantha - superpowers were nice, but they didn’t help much when you had more booze by percentage in you than some beers. They deflated Brianna again and, after changing into some night robes that Sam had laying around, went to bed - Samantha on her own, rather cushy one, while Lydia rolled off her mattress and onto the deflated Brianna while she slept.

The butler who came to wake Samantha was more than a little surprised to find three young women in the room where there had been two, one of them in nothing but a swimsuit - but honestly, the look on his face was well worth the time she’d spent underneath Lydia.