Collar Girls - Erotic Capture
Copyright© 2026 by Agent Doiron
Chapter 3
Mind Control Sex Story: Chapter 3 - Young trainers earn their licenses to use mind control collars and get ready to go on their first adventures. The collar girl series of stories are an exploration of consent in a science fiction world where mind control collars allow for the capture and domination of willing women. Capture, submission, and domination are major themes in these erotic stories. Informed consent is paramount in the submissive / dominant relationship.
Caution: This Mind Control Sex Story contains strong sexual content, including Ma/Fa Consensual Mind Control Heterosexual Fiction Science Fiction BDSM DomSub MaleDom FemaleDom Group Sex Oral Sex Petting
“Hammerfall stop!” Sandra commanded.
A mote of light raced down the leash from her wrist towards the throat of her sabre hound. The long-haired hound sat down in the grass, dutifully waiting for the command to reach her. She didn’t fight it. She just sat there panting in the sunshine, looking bored. Her serrated teeth glinted with saliva.
Sandra was practising with her collar pet. Hammerfall was following her commands, but the hound didn’t seem to be sufficiently engaged. There was a certain magic to it when a collar pet was completely focused on its master, when they were locked in, and Sandra wasn’t getting that from Hammerfall.
It was a beautiful day. The sun was shining out of a clear blue sky. By all rights, Sandra should have been relaxing on the beach. The last thing she wanted to be doing was training with her collar pet, but the final exam was tomorrow. She didn’t have time to relax. There was a practicum portion to the exam, where she would prove that she could train a collar pet. She needed Hammerfall on the top of her game, and she wasn’t there yet.
“Razorclaw follow,” Kevin commanded.
His sabre hound trotted over, following the command without hesitation. She was gray in color with long hair that faded to white on the feathering. Kevin was practising alongside Sandra. His full name was Kevin Five-Twenty-Three. There was some sort of family history behind his last name, but Sandra didn’t know him well enough to care. They were working together out of necessity, because of the upcoming test. There were other trainers in the field, each of them working diligently with their own hounds.
“What do you think?” Kevin asked, gesturing to his hound.
“I don’t think she’s focused enough,” Sandra said, looking at Hammerfall, “I need her to be better for the practicum.”
“I meant Razorclaw,” Kevin said.
“What?” Sandra asked, turning to look at him. She had her hand tangled in her hair at the back of her head. When she gripped and pulled it seemed to help relieve the tension.
“Maybe you should take a break,” he said.
A flash of movement caught Sandra’s attention. Turning a corner, coming from the direction of the temple, two trainers were walking towards them. It was a young man walking hand in hand with a young woman. The woman had long blonde hair and she was wearing blue harem pants that flowed in the breeze. She had large breasts which were barely restrained in a bikini top. The young man was muscular without being hulking. He had shoulder length brown hair which was carefully styled. They were both wearing trainer pouches. Sandra did a double take and then her heart leapt. It was Sofia and Liam. The two of them were strolling along together as if everything was normal.
Sandra ran towards the pair without hesitation. She slowed down enough so that she wouldn’t knock her friend over and then grabbed Sofia into a hug. A little part of her mind noticed that Sofia wasn’t wearing any makeup before she buried her head in her friend’s shoulder and squeezed. Sofia laughed and hugged her back, pulling away almost immediately. There was a smile on her face and then she made eye contact with Sandra. Her smile melted into an expression of concern as she pulled Sandra back into the hug.
“What’s going on?” Sofia asked.
There was a pounding of feet as more trainers arrived, hot on Sandra’s heels. It was Kevin and a mutual friend Brad Parker. Liam and Sofia were greeted like lost teammates. A series of handshakes and high fives ensued that left Liam looking confused and Sofia bemused.
“Holy shit, I thought you two got cut,” Brad said.
“I thought they quit and ran off together,” Kevin countered.
Sandra made a fist, being careful to wrap her thumb on the outside of her fingers. She hit Sofia in the shoulder, hard.
“Don’t do that to me again,” she said as Sofia staggered backwards.
“Oww! Do what?”
She didn’t answer because she was lining Liam up for his own punch. Her fist thudded into his shoulder, harder than she hit Sofia. Liam took it without flinching or trying to dodge. He had a solid shoulder. He smiled at her in response. He had a nice smile. She found herself smiling back.
“Seven cut out of twenty,” Brad said in a tone of amazement.
“No dumbass,” Kevin corrected, “With these two still in the program it’s only five.”
“Are you saying we lost five of our fellow candidates? Who got cut?” Sofia asked.
“Evelyn freaked out when Priestess Josephine put you in storage,” Sandra explained, holding up a finger, “Walked out and didn’t look back.”
“Mohammed never showed up. I guess he chickened out,” Kevin said, holding up his own finger.
“Charlotte tried to negotiate with the priestess. She wanted a collar girl contract with guarantees. She walked away when the priestess wouldn’t agree to her terms,” Sandra added, holding up a second finger.
“Peter...” Kevin started.
“That asshole tried to ruin it for the rest of us,” Brad interrupted, “He called Priestess Josephine a whore and then started ranting about the goddess. He had to be escorted out of the class by the police officer.”
“Then there was Jerry,” Kevin said, holding up a fifth and final finger, “He freaked out and used the failsafe. I kind of feel bad for him. If it wasn’t for Peter, he might not have been so quick to panic.”
“Either way, we started the year with thirty-three in the class and now we’re down to fifteen before the final exam,” Brad said.
“Damn, you put it that way and you’re making me nervous,” Kevin replied.
Sandra was feeling it herself. This exam was going to be the culmination of two years of classes. The amount of effort that was riding on the one test was enough to make anyone nervous. She could only hope that Hammerfall was ready. Oh shit! Her collar pet. Hammerfall was still in the ‘stop’ command on the other side of the field.
“Hammerfall, follow,” she said, pressing the button on her wristband to confirm the command.
“That priestess let you out just in time,” Brad said.
“In time for what?” Sofia asked.
“The exam,” Sandra explained, “It’s tomorrow.”
“No, silly. The final exam is like a week away,” Sofia argued. She pulled her tablet out of one of her trainer pouches. Sandra could see it on her face when she saw the date. Her jaw dropped and she started making noises of disbelief.
“Holy shit! We’ve been in storage for six days,” she finally managed to say.
“Yeah, okay, that sounds right,” Liam replied.
“No, it doesn’t,” Sofia said indignantly, “It didn’t feel like any time passed at all. It was just a flash. Six days gone, poof.”
At least that explained Sofia’s lack of makeup. Only special makeup translated into storage, and that stuff was expensive. Whatever makeup she was wearing burned to ash six days ago.
“Crap!” Sofia exclaimed. Liam gave her a little hug, comforting her.
“I guess it’s supposed to be part of the experience,” she rationalised, “A collar girl never knows when she’s going to be released.”
“Or by whom,” Liam added with a grin.
“Or where,” Kevin said, “When Priestess Josephine released me, I was naked in the middle of the training ground. I had to run back to the dorms.”
“Yeah, that priestess is a real hard ass,” Brad said, laughing at his friend.
“She’s just defending the interests of the church,” Sofia said defensively, “She might have treated you guys a bit harshly, but it was so that if you ever have a collar girl then you’ll treat her well.”
“It was more than that,” Kevin argued, “Peter got her pretty riled up, but after Jerry used the failsafe, she was merciless.”
“I’d be pretty pissed off too if someone tried to burn my arm off,” Sofia said.
“Did anyone else notice that she always seems to have a breeze blowing around her?” Liam asked.
“Hey, you know what you should do?” Brad said to Liam, “Go celebrate being released with a big breakfast.”
“Oh, shut up!” Sandra said, scowling at him. Liam and Sofia both appeared confused.
“These idiots,” Sandra explained, pointing at Brad and Kevin, “Forgot that the collar doesn’t restore your intestinal bacteria when you come out of storage. They went out and had a big breakfast when they were released.”
“Oh no!” Sofia said. She understood, but by the look on his face, Liam still wasn’t getting it.
“You need the bacteria in your intestinal tract to help you digest normal food,” Sandra explained to him, “That’s why collar girl friendly food exists. It’s full of probiotics. These idiots ended up spending a day in the medical clinic because they ate normal food immediately after being released.”
“Well, how were we supposed to know?” Brad asked.
“They literally taught us this in class!” Sandra snapped.
“Yeah, but I never planned on being put in storage, so I didn’t pay attention,” Brad replied, causing the rest of them to laugh.
“I wish I could have been there to see you guys as collar boys,” Sofia said.
“We prefer the term collar warriors,” Kevin replied.
“I must have had a defective collar then,” Liam said, “Because mine was set to collar boy mode.”
“Yeah, mine must have been from the same batch,” Brad agreed, eliciting more laughter.
Sandra wasn’t really finding it funny. She looked down at her hound, who was sitting at her feet, panting happily. She needed to go back to practicing. It was good that Liam and Sofia were back, that was one less thing to worry about, but the practicum was coming way too soon.
“Hey, how are you doing?” Sofia asked, touching her wrist.
“What?” Sandra asked in surprise, “Me? I’m fine.”
“You don’t look fine. You look frazzled,” Sofia said. She sounded concerned.
“Yeah, well, I’ve been practising with my hound. I don’t think she’s quite there yet,” she said, “You need to practise too.”
“No, I’m fine,” Sofia replied.
“The test is tomorrow. You need to train.”
“I’m good. I’ll be ready for tomorrow,” Sofia said dismissively.
“Aren’t you going to do anything to get ready?” Sandra demanded.
“Have you spent the last six days studying and practising?” Sofia countered.
“Yes,” she replied.
“Then you’re fine too,” Sofia said.
“Wait, are you suggesting that I need six days of practise to get to the point where I’m as ready as you are?” Sandra asked.
“It’s not a competition,” Sofia said, “There’s just some things I’m better at than you are.”
“Seriously? You think you’re a better trainer than me?” Sofia asked, her voice getting louder. The boys stopped talking, looking over at them.
“Well yeah, of course,” Sofia replied. She sounded serious. Sandra couldn’t believe her ears.
“Do you want to bet?” she asked.
“This sounds interesting,” Brad said quietly. She ignored him.
“Any time. What are the stakes?” Sofia asked.
“Freedom of course,” Sandra replied.
“Oh damn!” Brad exclaimed.
“See, I knew there was a reason we were friends. We need to go to the test tomorrow, but until morning you’ll be my collar girl,” Sofia said.
“No, you’ll be mine,” Sandra countered.
“Did you hear that?” Sofia said to Liam. She stepped over to him and ran her hand up his chest, “Sandra’s going to put me in a collar. Does that make you jealous?”
Liam smiled at her and trapped her hand against his chest. He pulled her in and they started kissing. They looked like they were lost in their own little world, oblivious to everyone around them.
“Ugh! Enough,” Sandra exclaimed, interrupting them, “When I win, I’m keeping you away from him. No boyfriend time at all.”
“Hey! Keep me out of this,” Liam said.
“Oh yeah!” Sofia said, “When you lose, I’m going to give your collar to Liam. I’ll let him capture me too. We’ll give him the chance to have two collar girls simultaneously.”
“Damn!” Brad exclaimed.
“I’m not going to lose,” Sandra replied.
“Then it’s a deal?” Sofia asked.
“Deal!” Sandra replied, “This is going to be easy.”
“How do we prove who’s the better trainer?” Kevin asked.
“Collar pet duel,” Brad said.
“No! Eww, that’s stupid,” Sofia said, looking disgusted.
“I’m not doing that,” Sandra said simultaneously.
“Okay, well then we need a test that shows who’s the better trainer,” Liam said.
“We could do the standard battery of tests,” Kevin said, sounding dubious, “You know, the stuff that will be on the practicum.”
“Too easy. Let’s make it challenging,” Sofia said.
“How?” Sandra asked.
“No collars,” Sofia replied, “We do the standard tests with our sabre hounds, but they’re free. See who trained them better.”
Suddenly, Sandra was starting to feel nervous. She knew the standard tests backwards and forwards, but she’d never tried them on her hound without the collar. It never even occurred to her.
“Hold up,” she said.
“Actually, that’s not a half bad idea,” Kevin said.
“I still prefer a collar pet duel. It would be more traditional,” Brad said.
“Yeah, but there’s always a chance one of their hounds is killed. Then they would automatically fail tomorrow. Too big a risk,” Liam pointed out.
“Skill practice is better,” Kevin agreed, “This will show the pet knows the commands.”
“What do you say?” Sofia asked, looking at Sandra with an arrogant smile. She really did think she was the better trainer. She needed to be put in her place.
“Okay, yeah. Let’s do this,” Sandra replied.
“I’ll go first,” Sofia said.
She pulled a collar out of her pouch, detaching the wristband section and fastening it around her arm. She tossed the collar lazily towards the ground. It bounced and settled in the grass. A silver circlet of metal with complex etchings on the inside.
“Hemlock, I call you,” Sofia said.
The collar lifted off the ground as if being repositioned by an invisible hand. Light streamed out of the circlet forming a vaguely dog shaped form. With a flash of light, the form solidified into a hound, with the collar wrapped around its neck. A red leash of light connected the collar to Sofia’s wristband, which was now locked on her arm.
Hemlock had arctic white fur, cut short, except for the feathering on her legs and chest. She had a brown saddle shaped coloring on her back and around her triangular ears. She turned to look at her master as she materialised, opening her mouth and letting her tongue hang out in a canine smile. Her tail started wagging immediately.
“Who’s a good doggie?” Sofia said, stepping over to her hound.
She dropped down to one knee and started scratching Hemlock behind the ears. In return the hound licked her face, her tail wagging so hard that it looked like she was going to take off. Hemlock was a happy dog, basking in her master’s attention. With the way that Sofia was treating her collar pet it was easy to forget that the animal was a deadly weapon. Hemlock had the serrated teeth common to all sabre hounds. Teeth optimised by geneticists to tear apart the muscles and organs of other animals.
“Hemlock, I release you,” Sofia said, entering a command in her tablet.
With a series of clicks the collar around the neck of the hound released and fell into Sofia’s waiting hand. The hound barely reacted. She looked confused for a moment, but her tail kept wagging and she continued to lick at Sofia’s face.
“Hemlock stop!” Sofia commanded, holding a single finger in front of her hound’s face.
The animal immediately sat down, obeying the command. Sofia stood up and backed away from her hound, maintaining eye contact and keeping her finger in the air. Hemlock whined softly, but stayed in place, watching her master intently. Sofia put some distance between them, backing up so that she was a good twenty meters away.
“Hemlock follow!” Sofia called out.
Her hound burst into movement, accelerating into a sprint towards her master. Sofia appeared happy at first, then her eyes widened as she realized her collar pet wasn’t slowing down. Hemlock bowled into her master, nearly knocking her over. Sofia spun, diverting the animal to the side. Not to be denied, Hemlock jumped up, rubbing her face into Sofia’s belly. With a peel of delighted laughter Sofia grabbed at her hound’s head, scratching at her ears. The hound’s tail was wagging like crazy. Sofia lowered her face to be licked, and the hound gave her a quick face washing.
“Your turn,” Sofia said, leading her hound back to the group.
Sandra was feeling nervous. Sofia’s display wasn’t perfect, but it had been impressive. She had good control over Hemlock, and the hound was clearly devoted to her. She looked at her own hound, Hammerfall. The hound looked back at her with a bored but attentive expression on her doggy face. She ruffled Hammerfall’s ears, causing her tail to start wagging.
“Okay girl lets prove that you’re the better hound,” she said, pulling out her tablet.
On the tablet she accessed Hammerfall’s profile and activated the release command, saying it out loud for confirmation. Hammerfall looked confused as the collar clicked and fell away from her neck. Sandra reached down to pick it up out of the grass, which Hammerfall took as an invitation to lick her face. She pushed the hound away, gently rubbing behind her ears as she did. Hammerfall sat in the grass enjoying the attention from her master. Sandra took a moment to think things through. She needed to do something different from Sofia, to be more impressive and win the bet.
“Hammerfall follow,” she commanded, snapping her fingers in front of the hound’s face.
She turned her back and started walking away, holding her hand a little off to the side. Within moments a wet nose poked at her hand as Hammerfall followed her.
“Good job, you’re doing a really good job,” she said as she walked around in a short circuit. Hammerfall wagged her tail at the praise, following her around. It was going well, so far so good, but she needed to do more.
“Hammerfall stop,” Sandra commanded.
Hammerfall dutifully sat down, her mouth hanging open and her tongue lolling out to the side. Sandra gave her a quick scratch behind the ear and then turned her back to walk away. She managed to get a couple of steps before a wet nose bumped up against her hand.
“No,” Sandra complained, “You’re supposed to stop.”
She pushed down on Hammerfall’s lower back, trying to correct her and get her to sit down again. Hammerfall reacted by prancing back and then dropping down into a crouch on her front legs with her tail wagging high in the air. Apparently, she thought it was play time. Instinctively, Sandra’s hand came up to her wrist in order to correct her hound, but there was nothing there. Hammerfall barked at her playfully. Bounding around with her tail wagging.
Suddenly, a ball came flying from the direction of Sofia and her fellow trainers. It bounced between Sandra and Hammerfall, flying off into the grass. The hound didn’t hesitate. She ran off in pursuit of the ball.
Sandra froze for a moment, but there was no avoiding it. She started chasing after Hammerfall. She couldn’t let the hound run around free without a collar. She had an exam tomorrow and if anything happened to her hound, she was screwed.
Hammerfall grabbed the ball and turned to look at her. With a doggy grin, she started running, trying to keep out of Sandra’s reach. It was play time, and Hammerfall’s master was playing a fun game.
It took a while, but Sandra finally managed to get her hound to stop long enough to be captured. Hammerfall went into storage happy, with her tongue hanging out, and her tail wagging. Sandra began walking back, feeling angry and defeated.
She found Sofia sitting on a bench with Liam, she was leaning on him, and he had one arm up around her shoulder. Brad and Kevin were standing nearby chatting together. There was no sign of Hemlock. Sofia’s hound was presumably back in storage. Sandra was fuming. It was one thing to try to win, but cheating by throwing the ball was over the top.
“Here’s your ball,” she growled at Sofia.
“It’s not mine,” she replied. Liam gestured over to the two guys who were standing around, eavesdropping on the conversation. Brad put up his hand and smiled at her. She threw the ball at his head.
Brad ducked, letting the ball sail past him. He laughed, but he wasn’t laughing at her. He was acting like it was all a game, that the entire situation was a joke. That wasn’t how Sandra was feeling. She lost. Brad had interfered in the bet, but that didn’t change the fact that Sofia did a better job of controlling her pet without the collar. The terms of the bet were that if she lost, she was supposed to let Sofia capture her.
“Look,” she said to Sofia, “I need to practise before the exam. I’ll let you capture me after it’s over.”
“No,” Sofia replied, “You’ve spent the last six days training. You’re as ready as you’re going to get. What you need is a good fuck and some sleep. I know you won’t sleep, so being put in storage is the next best thing.”
“She doesn’t need to have sex with me,” Liam said.
“Shut up!” Sofia and Sandra said simultaneously.
“You made a deal,” Sofia said.
“Yeah, but...” Sandra started.
“Don’t you trust me?” Sofia asked.
“That’s not fair. You know I do,” Sandra replied, “You’re one of the few people I do trust.”
“Then trust me now. You’re spiraling. This is just like the situation with Eddie. If you don’t get out of this loop, then you’re going to be a basket case for the practicum. Please let me do this.”
She reached into one of her trainer pouches and pulled out a capture device. It was a standard model, consisting of a wristband handle, connecting post, and collar. The silver collar was open, but it wasn’t really a threat until the device was setup for human capture.
“I’ll capture you, and once you’re in storage, I’ll give you to Liam. You won’t need to acknowledge him, and you won’t be his collar girl in front of these two idiots,” she said, gesturing to Brad and Kevin.
As she spoke, she twisted the handle, extending the post to about a meter in length. A second twist and it was ready. The silver collar would snap shut on her neck if it made contact. The inside of the collar appeared etched with complex shapes that glittered in the sunlight. They were the sensors, microdrills and other circuitry necessary to capture a woman and turn her into a collar girl.
“I’m burning my way out if he has a small dick,” Sandra said.
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