It was late in the afternoon and Elena and Tom were standing by the open cage. Tom had spent the last two weeks helping Elena with her research into how people react to captivity and was now smiling gratefully at the blonde woman who had just unlocked him after many hours in the cage.
Tom was wearing black boxer shorts, whereas Elena was casually hiding her figure beneath a woven grey top and worn blue jeans. Over the weeks that Tom had spent helping Elena, he had fallen for the cute and studious woman. Elena felt the same about Tom, even though she was willing herself to think of him as just a test subject, to keep thing professional while she finished her work.
For the next stage of her research, Elena needed to study him in extended captivity. She knew this was important for her thesis, but she had been too nervous to ask. The thought of taking away a week of his life with just the turn of a key was a scary prospect, yet a prospect that appealed to both her studious nature and her fascination for Tom.
During their time together, Tom had come to love Elena's literal approach to life. She would look through the bars of the cage, hook her long blonde hair back over her shoulders in her attempt at flirty, and ask if he had plans for the evening. If he answered no, he would be treated to a smile and a wiggle of her hips, but instead of suggesting they go for dinner, Elena would sit back down on his cage and continued her research, often until the early hours.
However, even Elena's analytical mind recognised that twenty-four hours a day in an ultra-high security cage that barely let him move a muscle was cruel in the extreme and so she had kindly decided to alternate the cage with the pit.
The pit was a small concrete chamber beneath the basement floor. It had once been part of a drainage system but was now just a six foot by four-foot box, three feet deep and only accessible by a small metal hatch set into the concrete floor. Elena had furnished it with a mat and sheet, a bottle of water and a second bottle to pee into. Her plan was for Tom to live in the pit whenever he wasn't needed in the cage. Security was simple, but absolute. Ellie would just close the steel hatch and slide the bolt across.
However, to ensure continuous captivity, Elena had bought a length of heavy chain that was more suited to securing equipment on a construction site than restraining a prisoner. This would allow her to transfer Tom between the cage and the pit without her work being contamination by any sense of freedom.
"It's heavy," Tom panted, now on his knees as Elena heaved one end of the chain around his neck.
The padlock was equally massive, and Tom had to hold the chain in place as Elena puffed from beneath shiny blonde hair as she used both hands to squeeze the lock shut.
She had already locked the other end of the chain to a bolt at the bottom of the pit and as Tom moved, the massive shiny chain started to clink as link by link it slipped over the rim and into the pit. Tom quickly rolled over, his muscled arms grabbing the chain before he too was pulled neck first into the pit.
He looked up from the concrete floor to see Elena smiling, "Think you can get out of that?" she giggled.
"Bloody heavy and tight on my neck," Tom panted.
"It has to be... remind you of your captivity," Elena explained.
"Okay, but you have the key?" Tom breathed.
"The location of the key is not statistically significant," she teased.
"Okay, it's in your bra?"
"No!" she exclaimed.
"Panties?"
Elena let out a little giggle as she chewed bashfully on her hair. Her big brown eyes widened as she patted her jeans and finally produced the key from her back pocket. "See?" she smiled, "Now get in the hole!"
Ellie's feet paced impatiently, her analytical mind trying to make sense of her libido, as Tom climbed down into the pit and dropped to his knees.
"Will you do something for me," she ventured shyly, standing with her brown leather boots neatly together on the edge of the opening.
"Sure... but you'll have to get out of those jeans," he teased.
"No," she giggled shyly, "After I've locked you in, can you really try to break out? Smash at the hatch and shout."
"Will that turn you on?"
"No!" she cried, her cheeks blushing, "I want to see what that does to your breathing, your heart rate and your arousal."
"Arousal?" Tom sighed as the rest of the chain clattered down beside him.
He pulled down his black boxers to reveal a metal chastity tube with a pressure sensor at the end that sent live readings to Elena's phone. Elena had realised the side effect of her work on Tom's arousal and had worked it into her hypothesis. Despite her innocent intentions of using a chastity cage to measure pressure and arousal, the steel cage and padlock had the same end effect.
Ellie's feet straddled the small opening in the concrete floor as she heaved up the thick metal hatch and lowered it down on its squeaky hinges. There was a deep thud as it sealed the hole and then silence as if she had closed the portal to another world. She crouched down on the metal hatch as if expecting to feel vibrations from the man inside.
"Once I slide this bolt across, I won't unlock you for twenty-four hours," she called.
Her laptop that was monitoring his heartrate beeped more quickly as she scrapped the heavy bolt across, its end disappearing into its concrete home, "Now I want you to really try to break out."
Elena stood up and took a step back as Tom's shoulder pushed against the underside of the locked hatch. Tom's cries echoed around his dark cell, with only a muffled moan escaping into the room above. He crashed his back up against the hatch again, but the heavy steel was just as solid and inescapable as the rest of the concrete that enclosed him.
Exhausted, Tom dropped to his hands and knees, now on the verge of panic. "Fuck, Ellie, I can't do this!" he gasped, the darkness and the silence from above now playing with his mind.
Elena wheeled her desk chair on to the steel hatch and sat down. Now wearing her brown rimmed glasses and with her laptop resting on her thighs, she studied the reading coming from below.
"Ellie, please!"
Elena's big brown eyes frowned as Tom thrashed about beneath her. She hated herself for doing this, but she had to convince her subject that the incarceration was real and inescapable.
"Ellie are you there?" Tom was sounding increasingly desperate as his strong body hammered around beneath her.
Elena was now biting her lip, her body tense, but she had to continue the test. She tried to distract herself by tracing love hearts on her thighs, but Tom was still fighting to escape.
She had proved her point and now needed to calm him down. "I'm here Tommy and I'm slipping out of my jeans," she breathed. With her white silk lingerie now on show, she plonked herself back down on her chair, more playfully than sexily and looked down at the steel hatch beneath her.
"I'm drawing a love heart on my panties just for you," Elena called in an uncharacteristically suggestive way.
That seemed to work as the man's despite bid for freedom stopped. Tom's heartrate slowed and endorphins flooded his body as his cock pressed against the pressure sensor inside his chastity cage. Ellie's lips curved up as she pictured him lying helplessly in the cell beneath her, allowing herself a moment to enjoy the thought before scribbling down more notes.
Captivity was causing wild swings in Tom's feelings with her guineapig now displaying signs of euphoria. The stunning blonde woman in provocative panties sat in awe of the data as she innocently pieced together her findings.
"Oh no," Elena mouthed, as she realised that she still had her pen in her hands and had inadvertently drawn a love heart on her inner thigh, the top of the swirl placing ink on her panty hem.
*
An hour had passed, and an array of emotions had flowed through Tom's head. The roller-coaster of feelings that Ellie had inflicted on him had left him exhausted and panting deeply in his cell.
