The air was awash with the scents of sex, lust, and a tinge of fear. Some sort of magic was likely purging the heavier smells, as this many ponies stuck in small rooms in an underground hallway couldn’t be that clean without frequent baths or a lot of magic. And while I’d seen plenty of ponies trotting through, I never saw any water. Not that there wasn’t any splashing. The ponies on either side of me were plenty loud, the noise of their activities amplified beyond the effects of normal physics. Altogether, it was too tense for me to handle. Time went on without anyone visiting my little room, and as I watched ponies pass by, some looking like workers, others here for the residents, and a few tied up or shadowed by buff-looking stallions, the ache inside me grew. I was forbidden to escape, and that stopped me from ever making the attempt. I couldn’t talk either for the most part, and I was strangely grateful for that as it kept me from calling out to passerby and pleading with them to fuck me. Part of me felt vindicated when, as I broke down and started masturbating in full view of the ponies outside, a few of them turned and watched until I collapsed in frustrated exhaustion.

Then I started, confused, as a clear, high voice sounding right by my ear. “Welcome to the Watchmount Institute. It looks like you’ve taken your first step towards being a valuable member of our organization.”

I took a small pause between words to lay my ears flat against my skull and shut out the voice in case it had any commands, but one of the spells laid on to me seemed to know what I was trying to do and took control. It was horribly disconcerting to have my own ears swivel about without input, searching for the best way to point in order to make me hear every word with clarity.

“Joining us might have been your idea, in which case you’ll be joining our accelerated program. Some ponies, however, have unfortunately needed some persuasion. If that’s the case for you, don’t fret. Every pony adapts at their own pace. Remember to enjoy yourself!”

Up until that last part, I was starting to think this would all just be a harmless form message. I could’ve disregarded the last sentence as too general, but the words were laden with a suggestive tone, and the spell interpreted that as an order to pleasure myself when I wasn’t immediately busy with anything else, ripping apart the last shreds of my self-control.

I slid over to the bars, pressing my backside against one, and ground into it, dragging my pussy up and down the smooth metal until slow steps sounded behind me, at which point I moved to the side to give whoever was there easy access and waited, panting.

“You’re an eager little thing.” The sound was rich and low and sent a shiver of need through me.

There was a pause, as if he were listening to something I couldn’t hear. “Ah. I see. We’ll leave that suggestion in for now. I wonder how you feel about being locked in here, all nice and isolated, for another day. Does that sound good?”

My mouth opened, the two words I was allowed to say spilling out to my horror. “Yes, Master.”

That kind of scenario was nightmarish. Were these people working for Sable? Did she tell them to torture me? It didn’t seem like her style to intervene directly, but I wouldn’t put it past her if things were going too well for me.

“Hm. It seems just about anyone can tell you what to do. We’ll have to try blacklisting specific ponies. And we also know more recent orders only override earlier ones if they’re in conflict. Don’t you enjoy figuring out new things?”

“Yes, Master.”

It was only a test. I gave up fighting it and went back to rubbing myself against a bar, letting out small moans.

“You’ll be a hit with some of our more … enthusiastic members. Your little condition makes basic training unnecessary, so I think we’ll save that as encouragement. However, I think you’ll have to prove yourself to the boss before we can say for sure. Are you willing to be the star of some pony rides?”

The bar was wet, my eyes unfocused, pace jerky and rough as my body drove itself onto the metal to get that last bit of contact it was convinced would lead to release. I let myself fall into the buzzing of pleasure and foggy denial, not even hearing my own words as I responded.

He said something else and I turned around, a whine leaving me at the sudden interruption to my latest fruitless attempt to cum. I blinked and got my first sight of the pony who’d been the first person to have a real … sort of conversation with me after I arrived at this place.

Indigo mane, light brown coat, and horn. The stallion was rather slender-looking. He grinned.

“Done looking? To you, I’m Doms Madio. To me, you’re the slut. Now come with me, we’re going to give you a little test drive.”

I followed obediently, my steps awkward as I worked around the feeling of the plug in my ass and my tits rubbing against my thighs, or whatever they were called on weird talking ponies. Even with the command to enjoy myself suppressed for the moment, I was still tempted to trot up to one of the other ponies walking by and start humping them.

Doms took us out of the underground hallway and through a luxuriously decorated waiting room, with marble, polished wooden furniture, and a stunningly-detailed portrait of a large white pony, or maybe more of a horse, with both wings and a horn. The way she was posed reminded me more of an idealized ruler or a religious figure than a being who actually existed.

We ended up at a garage-like structure loosely attached to the main building, except it didn’t contain cars. Around me, a few other ponies were getting fitted into or attached to devices that only vaguely resembled anything used for transportation. The tamest of these were the same type of cart with the dildo sticking out the front of it I’d that been tied to and forced to pull all the way over here. Doms wasn’t headed for those. No, we were headed for a collection of devices that only qualified as vehicles because they had wheels. I stared in horrified fascination as a mare ahead of us was shoved into a combination of a tractor and a stockade. Her back hooves were fastened to the platform in the middle of the thing, her front limbs and head stuck through the stocks, and two thin chains were attached to piercings in her nipples and pulled toward some part I couldn’t see as she mewled in pain.

“No, that’s a little too bland for you, I think,” Doms said, noticing where I was looking.

My eyes widened at that.

“We’ve recently come across an interesting bit of magic,” he continued conversationally. “it has a remarkable amount of similarity to the one keeping you all pent up. It’ll be interesting to see how you perform with a partner in similar straits.”

He moved on to a vehicle with a thick box on top, and a smaller platform on the back close to the ground so anyone could step up on to it, with two holes leading to the interior of the box part, one above the other. Doms smiled at me as he moved to the sides, which were made of glass. I looked in with trepidation, but it was empty, oddly shaped and full of padding. Doms noticed my questioning look and flipped open the latches in response, then pushed the top open.

“Go on, climb in. You’ll be on the bottom, facing toward the back. Make sure your mouth lines up with the hole. We wouldn’t want to deny anyone their free sample.”

I gave him a look of loathing. “Yes, Master.”

The command didn’t force me to move immediately, as it seemed to work off of only my own knowledge. As long as I convinced myself I was working toward doing what he said, it let me stand there and contemplate the vehicle where I’d be … sampled. I shuddered at the wording, my eyes roving across the thing’s insides as I looked for the right way to position myself to get inside. Eventually, I had it pretty much completely figured out—the little depressions where my hooves were supposed to go, the bit that was supposed to hold my tail, a glowing aura near the hole my mouth was supposed to line up with that was likely magical—and couldn’t delay any longer. I stepped up onto the platform leading onto the vehicle, and couldn’t help but notice that if I still had a dick, it would line up perfectly with the hole leading inside. Back to familiar grounds, it looked like. I shivered in repressed rage and despair. Locked in here without even a way to keep the always-rising lust at bay, this entire thing was a recipe for insanity.

I made it into the cushioned inside, wriggled around backward, and stuck myself into the right places. As soon as my head neared the little hole, an invisible force grasped it, keeping my mouth from closing, and lined it up perfectly. The rest of the restraints were similarly magical, tightening on my limbs once I slid them into the appropriate holes.

Doms stepped toward me, then up, and then he was above my now very limited field of vision. I felt his slow breaths against my body as he moved his head up and down, examining me in what would have been a very creepy way if I wasn’t so turned on. As it was, I just wanted him to fuck me, especially when I felt his weight shift and his hot breath hit lower down, setting my spine to tingling and making my wetness intensify.

“Very good. Feel free to struggle, if you want,” he said.

I wasn’t going anywhere, I knew this thing had to be designed for unwilling occupants, but I couldn’t help the surge of hope at that command. I still couldn’t escape, but if that command held and I was in a situation where I could linger long enough for someone unaffiliated with this Watchmount Institute to find me, I might have a chance. So I bucked against the interior, the smooth cushioned surface softening my movements and pushing back gently before I could get anywhere. But I wasn’t stupid enough to think I’d be getting out right now anyway, not with Doms right there to command me if by some happenstance I broke this mobile cage. It didn’t take long for me to realize this, and instead of ineffectively scrabbling against my bonds, the heat inside me demanded I try to satiate it. I ended up thrusting back and forth, trying to rub my clit against the restraining material, but my cunt was stuck facing upward, without anything to grind against. It was endlessly frustrating, and I dearly hoped I wasn’t going to be stuck here sucking dicks the entire day. Even when I’d been doing that in Sable’s tower at least the dick had been mine.

“Looks like your partner has arrived. Welcome to your initiation, Durian White.”

My ears perked up as I tried to catch a hint as to this mysterious pony’s identity, but the cushioning had enough of a grasp on my ears that all I could make out was muffled conversation. Then the new pony, Durian, stepped up on the platform and I saw him. Or at least, his lower half. His fur was a blue so light it looked almost white, which explained that part of his name, I guess. But what really caught my intention was the shaft swinging below him. It was fully extended and dripping bits of precum from the end. At the base of his cock, behind his balls, I caught sight of a glint of golden metal. A ring to stop him from cumming, instead of a spell? He started to clamber in with me, and I saw he had a plug in him like mine, with that same crumbling pyramid. Then he hesitated.

“Hang on, I don’t want to be put in with this mare unless she started out as a volunteer.”

Yes! Someone in this world with a shred of decency. I could’ve cried.

“You’ll get to talk after your pony ride. Unless you want to put this off for another week?”

“…I’ll hold you to that,” Dorian muttered, and he was above me.

And then I realized what was going on, right before he settled into place and plunged his dick into me, settling into my deepest parts. A part of me cried out in exultation, and I bounced against him with the little leverage available to me. He didn’t hold out for long either and began thrusting in and out, speeding up until it hurt.

“You two have fun in there,” Doms said, and then closed the top of the vehicle over us.

Any outside sounds became muted, leaving quick breaths and slapping flesh as Dorian plunged into me and pulled back harder, faster, my own hips bucking back against him. There was an endless time when nothing changed before my body registered motion and the vehicle started to move.

Each bump on a misaligned cobblestone or lurching halt as it stopped its slow pace for pedestrians to pass was an unanticipated flash of pain and pleasure as we moved against each other. I rubbed my tits against him, shivering as they tingled against his flesh, and gasped as he thrust into me.

Then a stallion outside was curious and horny enough to step onto the back platform, the vehicle’s weight shifting as it magically compensated for the addition. I stared as his cock grew to full length and he decided between which hole to stick it in. In the end he chose mine, and my mouth was full of his thick shaft. I suckled and licked, but I wasn’t up to my usual standards. The vehicle’s pace was too irregular to get a good rhythm going, and my tongue broke off its motions too many times as my backside was occupied, the surging heat making me try for an orgasm that remained forbidden to me.

Even with my subpar performance, I still coaxed an orgasm into my mouth and felt the cock bulge and quiver, then sucked down the stallion’s seed before it could spill out, cleaning his dick and licking at the last strands of thick cum before he withdrew with a sigh. Then I realized what I was doing and questioned why I’d made him cum at all when there wasn’t a command making me before Dorian thrust in particularly hard and I was lost to the haze of heat and motion and pain and denial.

Another stallion stepped up after the previous one left, and this one chose Dorian. It looked like he didn’t have much experience. It took a lot longer for the new stallion to cum, and when he did a lot of it dripped out and leaked down to my slot, where I licked it up instinctively, the throes of pleasure and denial taking any reluctance or thought I would have had out of the process.

A lot more came after that. They eventually seemed to figure out that I was the most skilled and mainly went for my mouth, where I got used to the lurching movement of the vehicle and swallowed their loads until I was back to something close to my usual level of skill even as Dorian kept pounding into me, never seeming to tire. I wondered how long he’d had that ring on him for, and then another cock interrupted the thought and I got back to sucking.

We were at it for a long, long time. The daylight thinned out and there stopped being as many ponies eager to use us. Once, a mare stepped up to investigate us, which was confusing until she crouched down and I saw her horn. She thrust it into my mouth and it was electric and hot, shimmers of pulsing magic dancing up and down its length. I sucked it experimentally and she moaned. I doubted all unicorns had what were basically dicks on their heads, so this was probably some sort of spell she was using on herself. Lust rose and washed away my thoughts again, and I started sucking wildly, probing across the horn’s surface with my tongue, arching up against Dorian as I tried to get that last bit of feeling that would lead to—something. It never came, I never came, no matter how high the pleasure rose. Dorian seemed to sense my need and redoubled his pace, and I moaned around the mare’s horn. That seemed to set her off, as she echoed the sound and then the horn grew heavy and sparks flew all over my mouth. I flinched, but they turned into something liquid, something I remembered. A scene flashed into my mind, right after I’d been turned into a mare and I’d licked my pussy until I came. She somehow came from her horn.

The things a unicorn could do seemed more and more blatantly unfair as time went on. I wished Sable had given me a horn.

After that, everything slowed down. Fewer ponies came to fuck us at night, and although Dorian couldn’t move enough to pull out of me and probably wouldn’t if he could, exhaustion caught up to us and we moved against each other more slowly, fighting against the heat which told us to go faster and harder.

I was sure our vehicle would return soon, that we were done with this entire experience, but it just kept on trundling through the night. The sun rose, and with it an influx of energy. I bucked up against Dorian, which sent him into a frenzy which left my pussy raw and abused. Not that the heat would let us stop. A few early risers saw us and came to get their dicks wet, and Dorian seemed to get better since more of them picked his mouth to fuck this time around.

Around midday, a group of raucous, drunk-looking stallions arrived and kept pace with the vehicle. Every so often one of them would come up and fuck us, the rest cheering them on. Then one of them came up to us and started talking.

“Y’all’re looking so plain and boring in there. Hows about a bit of bling to make it all better?”

A roar of approval went through the crowd, and a river of fear shot through me. I had a few ideas of what they meant by that, and none of them were good. That fear fed into lust, and I vented my frustrations the only way I could, by humping against Dorian.

It didn’t take long before my fears were confirmed. I smelled excitement and smoke, and then one of the guys came up holding tools and metal. He bent down and looked at us.

“Which one of them goes first? The gentlecolt, or the lady?”

The resulting voices seemed inconclusive, but the stallion seemed to make a decision and moved toward Dorian, doing something near his muzzle. He made a sudden movement and Dorian screamed, bucking into me and sending a flash of pain and pleasure through my body, and I let out a moan. Then the stallion stepped back and Dorian had a ring in his nose. My mind went white with fear and the sound that escaped me was close to a whinny as I struggled against unyielding bonds. The band of metal approached and then, with a snap, it went through.

It took a long time for me to stop bucking against Dorian in mindless movements and come back to myself, and when I did there was a silvery ring stuck through my nose.

The group of stallions had been talking amongst each other while I adjusted. Surprisingly, there was no blood from the addition, though that was probably a combination of the metal’s temperature and Sable’s spells.

“And Vigilant Faith takes up the challenge! Let’s give him some hooves,” the leader said.

The sound of stomping was hard to hear through the cushioning and the distance the vehicle kept making between the group before they caught back up to us. Why were they still keeping pace?

The answer came in the form of a stallion with a ring on his cock, behind his balls like Dorian’s, who stepped up in front of me. At the bottom of his ring was a small chain. Another stallion stepped up and held that chain in his telekinesis, stretching it forward until the first one’s cock was in my mouth. I felt my new nose ring jiggle, and then it was attached to the one around the stallion’s cock. He thrust in and out before pausing as someone yelled at him.

“Vigilant, you idiot!” someone else in the crowd called.

The chain jerked and I mewled in pain as the stallion looked back, trying to pull his dick out of my mouth.

“This is because of last week, isn’t it? It wasn’t like that, I swear, I’m going to pay you guys back. You don’t have to do this, you can’t leave me here,” he said, voice trembling.

Another pony chuckled, “Maybe next time we see you you’ll be in one of those things.”

I stopped trying to pay attention to the conversation as Dorian got his enthusiasm back and went back to plunging into me, hard and fast. My mouth moved around the new stallion’s cock, quick and efficient, and his pleas turned into pants and then moans, his legs buckling as I made him cum.

But he didn’t withdraw, though he tried, tugging at the chain and making my poor nose stretch painfully. I kept licking, and eventually, his dick rose back up and he thrust in and out before groaning as he came again.

I didn’t mind too much, aside from being mildly resentful that he’d picked me over Dorian. I was just too used to having a cock in my throat to feel anything another than annoyance and a hint of nostalgia. We passed through the town a few more times before the day ended, but this time instead of random ponies coming to fuck us, there were jeers and laughter at the pony stuck in my mouth—Vigilance, I think his name was. No, Vigilant. It was hard to remember through the haze of neediness constantly pressing against my nether regions.

It took more and more time and skill to make him cum every time, and since it was pretty much the only distraction while Dorian and I were in our more tired moments and fucked in slow, languid movements, I took it as a challenge, finding ways to bring more of Vigilance’s seed into my mouth, making him cry out in pleasure. I’d long since lost count of the times I wished I could cum so freely back when I was imprisoned and stuck sucking my own cock, so I assaulted the one in my mouth as a proxy for the dick I no longer had.

Night fell again, and this time the vehicle moved with purpose, speeding up. The increased speed made the journey bumpier, adding more variation and harder jerking movements as Dorian and I moved, faster, harder, as we sensed the end was almost here.

Our ride stopped, the pony hitchhiking with us gasping as I made him orgasm again, flooding my mouth with his cum. Slow hoofsteps approached.

“Looks like you’ve brought in a stray. Oh, I like the new additions, very striking. I think we’ll keep yours, little bitch,” Doms said.

I whined around Vigilant’s cock, the vibrations making it rise up again, filling my throat and choking off the sound.

There was a machine-like sound, a glow, and a bright flash, and then the cock left my mouth, vanished in a teleport along with the stallion it was attached to. After that, Doms took his sweet time letting us out, Dorian and I intensifying our motions with the arrival of our impending release from the contraption. The heat inside me made me wish for a real release, but I doubted Sable would be merciful enough to find me and remove all her spells within the century.

Dorian stumbled out first, leaving me achingly empty and thrusting at the air, and then it let me go. I scrambled out and rubbed my hoof against my pussy, unable to keep myself from trying for the last bit I needed to go over the edge. The entire area was red and throbbing and would be puffy and painful for at least a few hours before the spells would heal it away, but that didn’t stop me from rubbing harder and faster, gasping and sitting back, bringing my other hoof down to rub against my tits.

“Stand by me, and keep your hooves on the ground. You can play with yourself later,” Doms said.

I shot to my hooves and trotted over. “Yes, Master.” I hated him so much.

“Now, tell me how you feel, little bitch. Tell me honestly, just this once.”

“You’re a fucking cancer on the face of this planet. You and your organization are—”

“No more, thank you.”

Dorian rounded on him. “You said she was a volunteer!”

Doms sighed. “No, you said that. If you’re so broken up about it, ask her what she wants you to do.”

“But you said—”

“Fine, I’ll do it. Bitch, what do you want Dorian to do to you? Tell me honestly.”

I tried to continue my tirade, but instead, my mind went to us fucking each other, riding on waves of pleasure and denial, and my mouth opened and spoke without my conscious input. “Fuck me. Please.”

“Good. Now you can quiet down. Well, Dorian? I can remove your pesky little ring and let you fulfill her wish, or you can keep it. It is quite stylish.”

“No, I—alright.”

And that was the problem with being stuck in heat all the time. You just want to cum, not get out of the situation or think about anything other than how close to release you are. Not that I could blame him. The spell had made me answer honestly, and I really did want his dick back inside, filling that aching emptiness.

Doms lit up his horn, and that whining machine sound came back. Then the ring on Dorian’s dick was gone. He walked up to me, nostrils flaring, making small humping motions against the air when he paused. My body took over and I shifted until he was behind me, raising my tail. I jumped and then settled down as his hoof trailed over my tits, touching the wetness that flooded out of me, my pussy winking at him as I silently urged him to get on with it. He sighed, the soft breath against my backside making me pant in need, and then he pushed me down and mounted me.

I closed my eyes and moved against him, rolling my body so I could feel his every inch. He shuddered and pushed into me, again and again, making me moan. There must have been some magic from his cock ring lingering, because it took him way too long before he tensed up, his cock quivering deep inside me, and let his seed flood me, making me feel deliciously warm and full. He slowly withdrew with a sigh, and I reached back with a hoof—”

“Don’t move,” Doms said quietly to me.

I stopped, frozen, cum dripping slowly out of my cunt, hoof just a few inches away, the heat rising up in a roar and making me tremble.

“Now use her to clean yourself off. You can’t go around looking like that,” Doms said.

Dorian moved until he was facing me, his cock already back up and throbbing. He hesitated for barely a second before he stood over me and thrust it into my mouth.

“Go on, you can suck it,” Doms said to me.

That released my mouth, but my cunt was still wet with need. My tongue thrashed wildly as I sucked at Dorian’s dick, swallowing his cum and choking as he stuffed my throat to the hilt, balls swinging and bouncing off my chin. It didn’t take long before he came once more and slid out. I whined, the ache intensifying, envisioning his dick plunging back inside, but after that Doms gave him some directions and he left, and I was all alone, his seed still dripping out of me. My hoof twitched, trying to reach for my clit but denied by the command to hold still.

“Well. What are we going to do with you? Based on your filthy mouth, it seems you still need some more … acclimation. Yes, I think allowing you a partner was much too generous. You need punishment. Luckily, we have a station just for you.”

He led me on a twisting journey through the main Watchmount compound, not seeming to care about the cum still drooling from my cunt. I wanted to ask him where we were going, plead with him to allow me to touch myself just once, but he didn’t even look at me until we arrived at a receptacle just inside a large door.

“This is one of our side entrances. You’ll be stuck here, doing all you can to attract customers. If you don’t, I promise it will be very unpleasant. Now, in you go.”

His horn lit up and the upper part of the little station retracted, revealing more cushioning material and slots to place my limbs. The position looked vaguely uncomfortable, supporting someone who had to be upright, with only the head still above, poking out at the right level to suck or lick someone going by. At the bottom was a stone dildo that gained a fiery light as I watched. I hesitantly set myself in place, slowly lowering myself onto the dildo with a low moan. It was pleasantly hot, and as the rest of my new prison layered itself over me, sliding a ring gag into my mouth as its final action, I bounced as far up as the cushioning material would let me before sliding back down, drool leaking from my mouth and pooling somewhere below.

I ignored the first visitors completely by accident. I was humping the dildo, eyes rolling wildly, when I noticed something was wrong. The dildo had gone up from a pleasant heat to a burning one. I still ground myself against it, but now it was more pain than pleasure. I whined, trying to pull myself off and rising maybe a centimeter. When the next pony entered I begged with my voice and my eyes, but he strode right past, ignoring me entirely. It wasn’t until four more entered that I found someone willing to let me suck him off. He pushed his dick past the ring gag and thrust in and out, and with every motion the dildo cooled down just a bit, until the only fire inside me was the heat of denial.

I got two more visitors before there was a complete lack of any new ponies. I mentally despaired as the temperature in my pussy rose until I realized it was probably night. By the time it rolled around to morning I was screaming, hips jerking in their confines, tongue searching for something to stroke, vision hazy, and I didn’t even notice the stream of visitors had returned until one stuck her cunt in front of me and I obligingly lapped at it, the dildo cooling down as I did. I moved my tongue in circles, then flicked her clit until she came, splattering her juices all over my face.

This cycle continued for far too long, with me at one point facing a lull between visitors that made the dildo so hot tears blurred my vision without me even realizing until someone fucked my throat and I felt liquid trailing down my face.

Then one day Doms returned, a mare trailing behind him with ropes all around her, wearing a plug with the standard crumbling pyramid symbol and a ring gag like mine in her mouth, keeping her from doing more than hobbling forward or fucking. Doms released me bit by bit, and then he set me next to the new mare.

“It’s going to take me some time to build up the power to force her into her new station,” he told me casually. “You two fuck each other until I’m ready.”

The command took hold and I moved toward the mare, but she pushed me back. I tried to stop then, but the spell took over my limbs and made me push her over. She fell to the floor with a squeak and I laid her flat on her back. She was bound too tightly to resist as I collapsed onto her, sticking my pussy in her face and then licking hers. She struggled for a while. I licked her until she came, and licked off the drops around my mouth before sticking my tongue into her pussy, questing for just the right spot. Her muscles clenched, a small whine sounding from behind me, and I dug into that spot until she came again. At that point she finally stopped struggling against me and lapped at my pussy, making me pause, shuddering in pleasure, before I went back to it.

“Alright, now step away from her, little bitch.”

I moved back, looking at Doms as his horn grew bright and that mechanical whine filled the air. Then the ropes fell to the floor, empty, and the mare was in the same place I’d been for the past few days. She cried out and struggled against her confinement but Doms only chuckled and told me to follow him again. I gave her a regretful glance before walking off.

He gave me a grin. “I think it’s high time we put you in the Den.”

Next Chapter: The Den [C] Estimated time remaining: 43 Minutes