Jade tapped her foot impatiently, wondering for the umpteenth time where Kim was. Her best friend had asked her a huge favour of coming to a BDSM dungeon with her as a safety chaperone basically, and as reluctant as the Chinese girl was to do so, she eventually agreed. After looking up what happens in these places, she didn’t want Kim going in alone.

In the tinted glass of the building, Jade looked over herself. Hardly the type of girl to keep any sort of fetish gear in her closet, she’d dressed very normally in a white skater dress, stockings, and low heeled black leather boots. Her upbringing had been considerably conservative, so she really had no idea how one would dress to accompany someone into a dominatrix’s dungeon. “Jade!”

She turned as she heard Kim’s voice calling her name, seeing her friend walking down the street towards her and practically froze in place. “Thanks for coming.” Kim said as she walked up to Jade.

Jade was still in shock and staring at her friend. “What are you wearing?” She exclaimed.

“What?” Kim asked as she looked down at herself.

The blonde girl was dressed in one of the strangest outfits her friend had ever seen. A mesh crop top over a black tube top left little to the imagination up top, while wet look leggings and black platform Doc Martens completed the vision of black that Kim was dressed in. “You took the bus dressed like that?”

“Oh heck no, too many people would stare. I Ubered here.”

Jade shook her head. “I knew you were wild but I could not imagine that you had something like that in your closet.”

“Get over it Jade, besides what you’re going to see inside is probably even more kinky than what I’m wearing.” Kim paused for a moment. “But really, thank you for coming.”

She held out her arms and Jade obliged, hugging her friend. “You really want to do this?” Jade asked into a mouthful of Kim’s hair.

“Yeah.” Kim nodded as they pulled apart. “I’ve had a lot of fantasies like this for a long time, you’ve known me for years, I don’t trust anyone else with this but I didn’t want to go in there alone.”

Jade felt touched that Kim thought of her that way, they’d been friends for over a decade, but also in the back of her mind wondered why Kim had picked her of all people to reveal her kinky fantasies to. Kim took a deep breath. “Ok, let’s get going.”

The two turned and walked down the stairs to the dark tinted doors and into the lobby of the dungeon. Jade was surprised at how normal the room looked, sort of like the lobby of the office building where she interned at a tech startup, and not where two 20-year old girls would come so one could be dominated by a woman in leather. A woman sat behind the desk and looked up as they walked in. “Good evening, how can I help you?”

Kim sauntered up to the desk. “Hi, I’m Kim and booked for a session at 8. This is Jade, she’s here to just supervise, we talked about it on the phone I believe.”

Amelia nodded her head and typed a few things into the computer. “Yes, she will also have to sign the waiver as well.”

An iPad was brought up with an electronic waiver and Jade stepped forward to read through it. It was one of those “I do not hold the establishment accountable for things,” although what was new was the discussion of sexual activities and bondage in the waiver. She signed it and handed the iPad back, and the woman beckoned them to follow her through the door against the back wall. The room they were led to was not exactly Jade’s idea of a dungeon. The word made her think of a medieval castle dungeon, made of stone, large iron rings on the walls with shackles, damp and dripping and disgusting. Instead she was pleasantly surprised. Black floors, maroon coloured walls, some bondage equipment over in the corner in the form of a large X with cuffs and a couple benches, and some shelves on their left with all the tools of a trade for a dominatrix. Amelia left the girls and closed the door behind them, causing Jade to jump slightly at the click it made. She was still staring at the cuffs on the bondage furniture, wondering what exactly she had gotten herself into. Meanwhile, Kim looked like she was in heaven as she inspected each item on the shelf. With her sheltered upbringing, Jade didn’t really know what most of the items were but her curiosity got the better of her and she followed Kim over to the shelf to look at the items as well.

Kim noticed her and began pointing at different items excitedly. “That one there is a ballgag, I have one of those at home. Ring gag, always wanted to try one of those, it keeps your mouth open and you can’t do anything about it if someone sticks something down your throat!”

Jade made a disgusted face at the thought of a man forcing his cock between her lips if her mouth was propped open but quickly shook her head. “Those are bondage mittens, that’s an armbinder! Hoping I get tied up with one of those, always wanted to try one but it’s not something I can put myself into.”

Jade had to admit that despite the kinky purpose of these items, the leather craftsmanship was incredible and she began inspecting them similar to how she would inspect leather handbags. “You know.” Kim kept chattering. “Maybe you should look into bondage too, be a dominatrix yourself! Might help your self-confidence a little, plus you could tie me up and we’d both be happy!”

Jade whirled to look at her friend, sputtering as she tried to process the suggestion but was interrupted by a voice purring behind them. “Hello girls.”

Both Jade and Kim jumped in surprise and whirled around, having been so engrossed in inspecting the bondage gear they had not heard the woman enter. “Inspecting my gear I see, don’t worry. You’ll be wearing it soon enough.”

Kim gave a little squeak of excitement at those words but Jade was busy staring at the woman who had entered. She’d seen pictures of dominatrixes in her brief research, but now seeing one in person was a whole new level. She was tall, with a lean build and a stride that oozed confidence. Her hair was a poisonous red colour, a very bright contrast to the black leather she wore. The dominatrix was dressed in a black leather minidress, combined with opera length gloves and thigh high boots with skyscraper heels, all in the same black leather that contrasted with her pale skin. “I am Mistress Serenity, but you will simply call me Mistress in my presence. I would ask which of you is Kim, but from the way you’re dressed I think I already know who’s going to be kneeling at my feet tonight.”

Kim was practically bouncing on her feet to get started but Serenity then turned her attention to Jade. “And you are?”

Jade took a moment to find her voice in the back of her throat. “I-I’m Jade.”

“Well Jade, I’m assuming you’re here to look after your friend. Before we get started, and I know this will kill the mood a little but safety first, safeword. Critical in bondage and I’m sure you’ll appreciate it, if you say lullaby, or if gagged, three grunts, that is your safeword. We will stop and I set you free. If you’re in pain, or we’ve gone too far, that’s what you do, understood?”

Kim nodded before Serenity turned her attention to Jade. “Now, over by the door there is a red button. That’s the emergency button. If something happens or things go too far and I’m not stopping or you feel like Kim is threatened in a way, slam that button it’ll summon other employees in the building. You’re the observer, so if you deem it necessary to slam that button, then do it.”

Jade nodded her head slowly as she took in Serenity’s words. “Excellent. Nice dress by the way.”

She blushed as the dominatrix shifted her attention back towards her friend and picked up the leather armbinder. “Now Kim, I know you’re excited to get started. Hands behind your back, now!”

Serenity finally shifted into dominatrix mode with a commanding tone that startled both girls in the room. Kim immediately shot upright and stood with her arms behind her, quivering in excitement as the armbinder was pulled up her arms. “I wonder how flexible your elbows might be!” She commented as she buckled the straps around Kim’s chest.

Her hands brushed over Kim’s now thrust out breasts, causing Kim to giggle slightly and squirm at the touch. Jade could only watch in a trance as the laces were slowly done up, tighter and tighter as they forced Kim’s elbows to touch before additional straps were buckled around her arms and the laces were tucked away. “Bet that’s your first time in an armbinder.”

“Yes mistress-ah!”

Kim gasped as the riding crop that had seemingly just appeared in Serenity’s hands made contact with her thighs. “Did I give you permission to speak slave?” She asked.

“No mistress.” Kim responded before yelping as the crop made contact again.

“Clearly you cannot keep your mouth shut slave. I’ll make sure you don’t speak out of turn again.”

The jingling of buckles filled the room as Mistress Serenity brought up a black rubber ball attached to a web of straps. “Time for a proper gag, not that cloth and tape do it yourself at home.” She said as she brought the ball up to Kim’s mouth. “Open.”

Kim didn’t need to be told twice as she opened her mouth to accept the large rubber ball, grunting as her tongue made contact with the rubber. With the ball in place, the rest of the straps were soon strapped tight, one behind her head, then the Y shaped strap that went up both cheeks to meet at the bridge of her nose and over the top of her head to buckle in place. Two more crossed underneath her chin and attached to the back, locking her head in a vice-like grip of leather and metal. “Mmmph.” Kim moaned as she drooled slightly around the ballgag.

The next item was a collar, a thick leather one that Kim lifted her head to allow Serenity to buckle it around her neck and secure it with a padlock. A leash was clipped to a ring on the front of the collar, but it was left dangling between her breasts. Jade watched to the side in fascination as her friend was made more and more helpless. Leather cuffs were soon buckled around Kim’s ankles at the top of her Doc Martens and then her legs were forced apart so a spreader bar could be connected. Kim moaned in pleasure as she fully lost control of her limbs, only now able to take awkward long steps as a result of the spreader bar. “Would you like to take a picture as a memento?” Serenity asked Jade as she snagged the leash and held it up. “N-no thanks.” Jade said, momentarily shocked out of her trance at watching Kim get turned into a helpless package.

Serenity grinned, probably noticing that Jade was getting turned on by watching everything unfold. It’s always the nice innocent girls that are the kinkiest. She thought to herself.

Pulling on the leash, Serenity led the bound and gagged stumbling Kim into the center of the room and using a remote, lowered a hook from the ceiling that was then connected to the D ring at the end of Kim’s armbinder. The hook was then raised back up, forcing Kim to bend over forward as her arms were raised up towards the ceiling. “Figured a nice strappado will be a good way to start this one off.” Serenity said as she walked back over to the shelf to pick up some more tools of the trade.

Kim tried to turn to see what Serenity had brought but gloved hands on either side of her head forced her head to look straight down. “No peeking.” The dominatrix laughed before enforcing it with a padded leather blindfold.

Kim whined a little as her vision was taken away, now completely unable to see she could only turn her head in the direction of the sound of Mistress Serenity’s heels clicking on the dungeon floor as she circled around her prey. Jade could see the large vibrator that was now in her hand, no doubt about to be stuck between Kim’s legs. Sure enough, after a few circles Serenity went to work, pressing the vibrator into Kim’s crotch and switching it on.

A low buzzing filled the room and Kim giggled as the low power vibrator began to work. Squeaking also was heard as she squirmed and wiggled against her bonds, causing her wet-look leggings to squeak from the contact as she tried to push her hips towards the source of pleasure.

Jade now felt a little conflicted. Should she be watching this as a dominatrix basically brought her friend to orgasm? Is that something she should be watching? She was here to be a chaperone basically and watch over her friend, but did that mean she had to watch every single thing as Kim’s fantasy played out? It seemed rather personal, but at the same time Jade couldn’t take her eyes off her friend as her moans of pleasure became louder.

In fact, Jade was so focused that she failed to hear a section of the wall behind her open up and a figure enter the room until a gloved hand clamped down over her mouth. “Hmmmmmrph?” She jolted in surprise.

The shock of being grabbed with a hand across the mouth and the other around her waist to pin her arms to her side kept her rigid for a moment, which was enough for her attacker to haul her off her feet and carry her backwards out of the room as the wall slid shut again, cutting her off from Kim. Jade was dropped back down on her feet but then immediately shoved up against the wall. “What are you doing!” She cried out as her arms were wrenched behind her back and the clanking of metal was heard before metal cuffs ratched around one arm, then the other, cuffing her hands behind her.

Jade had never been restrained in her life and to suddenly find herself cuffed in a dark corridor by an attack far stronger than her made her fight or flight response kick in as she tried to struggle but instead she was spun around and pinned against the wall with a gloved hand covering her mouth again to stifle her screams. In the dim lighting, she could make out some of the features of her attacker. It was a woman, taller than her by quite a bit with the body of a volleyball player. Suddenly the lights turned on in the corridor and Jade had to close her eyes as she was blinded, then carefully opened them up.

Holding her against the wall was an Indian goddess dressed in a riding outfit. She was clad in a green long sleeved blouse, tan jodhpurs, black knee high riding boots, and black leather gloves. Jade’s mind whirled. She was clearly another dominatrix in this dungeon, but what gives, she never agreed to this! “You’ll get one question.” The woman told Jade with a hint of an accent. “And one question only if you promise not to scream.”

Jade meekly nodded her head the best she could and the leather glove was removed from her face. “W-why are you doing this to me?” She asked as she caught her breath and tested the cuffs, which were hinged and kept her wrists very secure.

“Because we can.” The woman said with a grin as she held up a purple ballgag with black leather straps. “Now be a good girl and say ah.”

- - -

Kim was in heaven. Blinded, bound, and gagged, this was everything she had ever dreamed of. With her arms sealed away in a tight armbinder, her legs spread, and a gag filling her mouth, she was helpless to resist as Serenity worked her over with the vibrator and gloved hands groping and feeling up and down her body. Eventually it pushed her over the edge and she screamed as she was brought to orgasm, still held up by the strappado bondage that was straining her shoulders. To her relief, her armbinder was unhooked, allowing her arms to drop against her back as she panted around her ballgag, trying to catch her breath. “Kneel.” Serenity commanded.

Very awkwardly with her legs forced apart with the spreader bar, she blindly fell to her knees. There was a click as Serenity locked the spreader bar to a leash point on the ground, then a hum as something was lowered from the ceiling and attached to the top of her harness ballgag, forcing her to keep her head upright. Serenity then removed the blindfold and Kim found she was positioned in front of one of the walls. She looked around, suddenly realizing that Jade was nowhere to be found in the room.

“Looking for your friend?” The dominatrix asked with a smile on her face, seeing the confused look in her captive’s eyes.

Kim nodded the best she could with her head leashed to the ceiling. “I’ll show you were she went.”

With a dramatic flourish, a remote was held up and thumbed, causing a portion of the wall in front of Kim to slide away to the side, revealing a floor to ceiling one way glass window. Kim’s eyes, initially following the sliding wall, focused now on what was on the other side of the window and they practically popped out of her head.

Jade was on the other side of the window alright, but now in strict bondage. Her hands and ankles were connected together in a single piece of bondage equipment that Kim recognized as a rigidspreader, cuffing her ankles apart like the spreader bar she was currently wearing, but with additional holes for the wrists to be locked beside her ankles. Jade was forced into an extremely vulnerable position hunched forward and locked in place, and she was drooling around a purple ballgag sunk deep in her mouth. To add to her humiliation, she was chained down on top of a small leather ottoman facedown, which caused her butt to stick up in the air and there was nothing she could do about it with a leather collar chained around her neck and locked to the front of the ottoman, holding her down on the smooth leather surface.

Kim whined and screamed behind her gag at the sight of her helpless friend, who had tears spilling down her face as she glanced around frantically, trying to find a way out of her rigid metal bondage. “Don’t like what you see?” Serenity taunted. “Don’t worry, the best part is to come.”

Kim could only watch as an Indian woman entered her line of sight in the room. Dressed in equestrienne gear, Kim’s eyes were soon glued to the large black strapon that the woman was wearing and began screaming and struggling even harder against her bonds as she watched the woman approach Jade. Jade, with her collar chained down, was unable to turn around to see what was coming and could only moan pitifully as the Indian dominatrix seemed to say something to her. Her skater dress skirt had become bunched up around her waist from how her torso was propped up in the air and her stockings and panties were quickly cut away with a small blade. Jade seemed frozen in fear, and Kim could only watch as the strapon was positioned behind Jade and slowly entered.

Jade finally reacted, screaming as she was taken from behind. Screams that Kim heard loud and clear as microphones inside the room transmitted the audio to speakers in the dungeon room that Kim was now in. She heard every one of Jade’s pleas to stop, her broken sobs, and then the pounding and grunts as the woman began thrusting in and out of her poor friend. “Just so you know, you’re both never leaving this place. You’re now sex slaves, and we can do what we please with you. And that means you’re next.”

Kim finally broke. She wept openly, tears streaming down her face as she closed her eyes, unwilling to look at her friend. Each scream tore at her heart, knowing that her own naivety and giving in to her kinks had brought this upon her friend, who had just wanted to support her and had been a completely innocent party. Why hadn’t she just come alone, instead of dooming both her and Jade to this fate?

The line of question in her head was interrupted as a leather gloved hand wrapped itself in her hair and jerked her head back. “Open your eyes slave.” Serenity commanded in a steely tone.

Reluctantly, Kim slowly opened her eyes back up and the scene was no less horrific than before she had closed them. It was almost a morbid fascination as she watched the woman pound into her friend, who was completely helpless to resist. “This is all just a taste.” Serenity said as she brought out her own strap on harness, causing Kim’s eyes to pop open. “Get ready for lots and lots of this.”

- - -

With the three dominatrixes busy with their captives, Amelia was working at the front desk to close up. Three more girls tonight meant they were stocking right back up where they left off. However she was a little concerned about that Chinese girl that had arrived with the blonde. She’d seemed cautious enough that she may have told someone where she was going, but they would falsify the security recordings and make it look like the girls had never arrived to begin with. Locking the front glass doors, she moved into the hallway and walked down the hall towards the office to finish filing away some notes that she had from the front desk.

Keying in the passcode for the office, she opened the door and got one step into the office before she was seized from behind. Amelia never stood a chance as two bulky men dressed in black hauled her off her feet and back down the hall before wrestling her into the storage room. Her cries were muffled by a gloved hand that seemed to cover the entire lower half of her face, but she knew the others were all in soundproof rooms and would not have heard her regardless. She heard a familiar zipping sound and winced as the thick plastic of a set of zip tie cuffs were pulled tight around her wrists, her silky blouse unable to protect her as the plastic bit into her flesh. Another set of zip tie cuffs were soon secured around her ankles just above the tops of her boots and she was then forced to kneel. The light was finally turned on, revealing that the storage room was where they stored all of the bondage equipment when not in use in any of the dungeons and she began to tremble in fear at the thought of what these men might do to her with all that was available. The men seemed surprised by the room they now found themselves in but took it fully in stride. “Always nice when these sluts come with their own stuff.” One grunted before balling something up in his hand. “Open up.”

Amelia could see it was some kind of cloth and her eyes went wide. It was a couple pairs of panties now compressed into a ball. Specifically, used pairs of panties that the girls of this dungeon had worn and used as gagging material for certain clients. And now she was about to experience it firsthand. “No plea-UGHHMMMMMMM!”

The hand came off allowing her to get half a plea out before the panties were stuffed into her mouth, causing her cheeks to bulge as they filled all available space. Amelia choked as she tried to keep the panties up at the front of her mouth, still held rigidly in place by one of the big men and occupied as she was, she did not see what the other man had retrieved until it was too late. The rubber phallus of a penis gag was inserted into her mouth, driving the packing even deeper and causing her gag reflex to kick in. What was attached to the rubber penis terrified her even further: a leather hood. The built-in gag was soon sealed against her lips as the hood was pulled over her head, cutting off her sight and muffling her other senses. The only two holes in the hood were lined up with her nose and the rest of the hood was laced tight, making her feel like her head was in a vice. Why is this necessary? Amelia thought if robbers were just here for money.

A posture collar was taken off a nearby shelf and wrapped around her throat, cutting off access to the laces of her hood. The collar forced her chin up and her head forward, and Amelia heard a very muffled click as it was padlocked on. These men were efficient with bondage gear. She noted. That wasn’t good.

Next she was forced down onto her stomach, her ankles dragged back until she felt her boot heels against her butt and hands and something else was used to secure her ankles to her wrists in a tight, constricting hogtie. The last part of her bondage was a small chain, clipped to the front of her collar and wrapped around one of the shelf’s metal poles. “Front desk down.” One of the men reported over the radio. “Now for the fun stuff.” He grinned as the men walked out the door and closed it behind them, leaving the secretary bound, gagged, blind, and hurting in the darkness as she wondered what was about to happen to the rest of the girls in the building.