With mixed feelings, she looked at the big red silicone ball resting in its nest of sturdy, black, leather straps. She knew from experience how severely this gag would test her endurance. With a diameter on the mean side of five centimetres, it was at the very edge of what her delicate anatomy could tolerate over long periods of time. She would drool terribly and her jaw muscles would soon begin to hurt, but she had already proven many times in the past that she would survive this torment without lasting damage. However, she never seriously considered to simply forgo the gag because without it, her bondage just would not be complete. To be deprived of speech had always felt like the ultimate humiliation to Nina and besides, it also stripped away the last form of resistance and made her helplessness perfect - which after all was exactly the experience she was aiming for. The leather blindfold, that she had also chosen to wear, was therefore only the icing on the cake, so that she could immerse herself completely in the supposed inevitability of her self-imposed ordeal.

     For now however, she had to take care that fantasy did not become reality and that she could indeed free herself again. She picked up the next padlock with which she intended to fasten her wrist cuffs to her chastity belt’s waist band and placed it behind her, threading its key onto an elastic hair band, which she then wrapped around her wrist. To be on the safe side, she tried a few times to grasp the key, which thanks to her dexterity posed no problem. It might take some time when she was cuffed for real, but as long as she could grasp the key, she would be able to free her hands.

     A look at her phone revealed that she only had a quarter of an hour left until the vibrator was activated and therefore she had no time to waste. With a resigned sigh she grabbed the head harness and pushed the big ball into her gaping wide open mouth. Still, it was an arduous struggle before she finally managed to manoeuvre the firm silicone sphere behind her teeth. Immediately, a slight pain developed in her jaw muscles, which – as she knew from experience - would worsen over time to levels that taxed even her considerable masochism. She lowered her head as far as her wide collar allowed, then pulled the central strap which ran horizontally across her cheeks tight at the back of her neck. The other straps of the head harness were left to dangle for the moment. She would deal with them once she had put on the blindfold. Its softly padded, wide leather cushions pressed gently but relentlessly against her eyelids when she buckled its retaining band at the back of her head. Nina tried to blink, but not the slightest glimmer of light reached her eyes and her breathing accelerated involuntarily when impenetrable darkness engulfed her, a sensation she was intimately familiar with from many long bondage sessions. Robert had often blindfolded her after she had once confided to him how much she enjoyed the feeling of increased helplessness it engendered.

     Her groping fingers searched for the remaining straps of the gag harness and soon had tightened them expertly around her head. She went through several passes doing this, since once she tightened one band, another became slack, stopping only when she was finally unable to find another strap that could be made any tighter; by then, the harness held the ball securely in her mouth, without giving her a chance to expel it by any combination of head, jaw or tongue movements. With single-strap gags Nina had succeeded in doing just that far too often in the past, so now she preferred it when a cleverly woven web of relentless straps kept her head trapped in its inescapable grip: not only did she look strictly gagged, she actually was, as well.

     Now there was only one thing left to do. Nina leaned back and with her hands searched the blanket behind her until she retrieved the padlock she had deposited there before, then pushed its shackle through the restraint loop at the top of her wrist cuff. Next, her fingers moved along her waist band until they encountered the sturdy hoop affixed to it at the centre back and after a few attempts, she managed to guide the lock’s shackle through this U-bow as well and thus join her wrist cuff to the chastity belt.

     She held her breath. If she connected the other handcuff to the lock as well and let it snap closed, she would be well and truly trapped! A harmless click and she would be at the mercy of her shackles for better or worse! The prospect was as intoxicating as acting on it would be negligent; first she had to make sure that her plan for freeing herself actually worked. Her already fastened arm was also the one around which she had wrapped the hair band with the key, so she closed the lock and then tried to reopen it again using only her trapped hand. This turned out to be far more difficult than she expected, since her oval-shaped, custom-made bracelet would not permit her to turn her wrist within its tight confines, so she already had problems getting hold of the padlock, let alone inserting the key into its lock cylinder. In addition, the cell phone’s timer had run out and the dildo in her vagina began to vibrate, which - as feared - was not very conducive to her efforts. Annoyed and forced to wage an aggravating war on two fronts at the same time, namely against the manacle and her own libido, Nina was close to giving up when the key suddenly slid into the lock. Done! Her triumphant howling, when she turned the key with her cramped fingers and the shackle promptly sprung open again, was swallowed up by her gag; only a torrent of saliva ran over her chin and dripped onto her thighs.

     Nina tried to calm herself and deliberate for a moment, although she had a hard time concentrating, what with the vibrator sending waves of excitement through her abdomen. Her experiment could be considered a success, after all she had been able to release herself. Nevertheless, she was uncomfortable with the idea of closing the padlock once more - and this time also securing her other wrist cuff. How long would it take her to free herself then? The thought of what she would be forced to endure in the meantime was frightening and arousing at the same time.

     As a small foretaste, a faint electric shock pulsed through her clitoris and caused her to twitch. Without thinking, she attempted to reach for her crotch, but since her handcuff was still caught in the shackle of the opened lock her arm was pinned behind her back. The unexpected jolt caused her to lose her balance, so she wildly flailed her other arm to compensate. The fact that she was able to move so freely struck her as wrong and spoiled her fantasy: She was supposed to be tied up and helpless! The sobering insight poured cold water on her arousal, which she had been barely able to rein in up to now, and killed her lust in one swift blow. Damn!

     Spontaneously, she moved her free arm behind her back and twisted it until she touched the padlock with the back of her hand, then tried to slide the manacle’s fastening loop onto the free end of the lock’s shackle. This proved difficult, but Nina stubbornly repeated her attempts until she finally succeeded. Without further ado she forced the lock to snap shut, reassuring herself with the observation that at least the key was still inserted.

     With the final closing of the lock, her excitement flared again. She instinctively tugged at her restraints, but the wide steel bands around her wrists did not leave any room for movement. Slowly, she bent her upper body forward until she toppled to one side and landed on her shoulder, then rolled herself onto her belly.

     In this position, she lay still while letting awareness of her body suffuse her mind. Her jaw hurt slightly, but the tightly cinched head harness thwarted any attempt to expel the big silicone ball from her mouth. Neither could she hope to free herself from the blindfold as long as it was kept in place by both its own tautly fastened band and the straps of the harness. Due to her enforced blindness, she felt the relentless grip of her collar and shackles all the more intensely, as well as the stringent pull of the chains wrapped tightly around her thighs and the constant pressure that the chastity belt exerted on her crotch. Most noticeable of course was the vibrator in her vagina, which kept her simmering on a small flame. Her breasts too now throbbed and swelled with her growing arousal!

     Nina writhed lasciviously in her chains and rubbed her inner thighs together, feeling the metal expanse and pressure of the crotch band with mixed terror and delight. Before her inner eye, a familiar film ran, in which she played the leading role as the wild slave of a sadistic and strict, sometimes cruel but nevertheless loving master, who was trying to tame her (in vain, of course). Just then she was driving him crazy with the sensual movements of her helplessly twisting, taut body so before long he would lose control and ravish her... She balled her hands into fists and tugged fruitlessly at the handcuffs, pulling the crotch band of the chastity belt into tighter contact and thus pushing the dildo a few millimetres deeper into her vagina. At the same time, she threw her head back and fought to straighten her legs until the chains cut uncomfortably into her thighs. Her body was now stretched like a bow, so that her tensed tendons and muscles were clearly visible under the sweaty skin. The clinking of her chains and her fitful breathing roared loudly in her ears as she imagined her master silently sneaking up on her and slowly opening the belt of his skin-tight jeans. Nina moaned throatily into her gag. Her engorged and thoroughly filled pussy throbbed with need. She was so close, just a little bit more stimulation, and her pent-up sexual tension would explode into a spectacular orgasm, like those she had experienced when she was still with Robert. Damn! She didn't want to think of him now! It was hard enough to imagine her perfect master with an innocuously generic face.

     "Aii!" Another, this time slightly stronger electric shock pulsed out into the surrounding flesh of her vagina and made her howl mindlessly. Her spasmodically spread fingers brushed against the key that was still sitting in the lock keeping her wrists fastened to the chastity belt. With just a little twist she'd be free again. If she wanted to, she could end her sweet torment at any time. She made an irritated groan and stopped fighting her shackles. Again she was yanked out of her fantasy, again her mood was spoiled and the orgasm lost. It just didn't work that way. Her imaginary master shook his head and smiled mockingly, exactly as Robert used to when she fancied she could evade one of his punishments.