It all started with the spirals. McKayla was up late one night working on a project, a collage she was making out of old science fiction magazines and back issues of Time, and she'd thrown on some cheesy 60s spy movie just to give her some background noise and keep her from falling asleep. She'd almost completely tuned out the film, engrossed in replacing the tanks of Tiananmen Square with Godzilla, when a piece of psychedelic set design that was outrageous even by the standards of the era caught her attention.
It was a plexiglass disc, covered in a spiral pattern composed of row after row of concentric circles of different colors--McKayla saw white, orange, red, and a burgundy color that only stood out when she paused the action on the DVR. It was the kind of color scheme that would only grow more popular over the ensuing decade, she knew, until it became practically ubiquitous by the late 70s. Each row of dots grew smaller and smaller as they receded into the center of the wheel, making it look almost like an octopus was reaching its tendrils in to encircle some small and cornered prey. The whole thing was mounted on a rotating shaft, and... and there was a Caucasian woman in a bikini staring at it.
As McKayla resumed the movie, she realized that there were a whole room full of women, each one occupying a booth opposite one of the spinning discs. They all had blank expressions of rapt concentration on their faces, and each one was repeating a series of mantras that was apparently intended to turn them into... 'Pleasure Units'? McKayla suddenly caught herself wishing that she'd been paying more attention to the movie. She hit record, hoping the cable box would pick up the parts she'd missed.
There wasn't much more to the sequence--one of the bikini-clad women went under the spell of the hypnotic spiral, only to be rescued by the square-jawed spy who wasn't nearly as interesting as the thing he stopped. McKayla rewound the scene and watched it again and again, absolutely fascinated by the tissue-thin veil of espionage action over a subtext that was blatantly, overtly sexual. She'd never really had that much of an interest in sex before, but suddenly she felt a surge of heat between her thighs that made her mahogany fingers dip into the waistband of her panties before she even realized she was doing it. Something about the idea of being influenced like that, of being made to feel desire awakened McKayla's arousal as surely as if she was in one of the brainwashing booths herself.
By the time she finally came, McKayla was moaning along with the hypnotized slave. "My sole purpose in life is to bring pleasure to my companions," she droned, her dark brown eyes rolled back under her heavy, fluttering eyelids. "All that is asked of me, I will perform." She'd gotten remarkably good at hitting the rewind button before the boring killjoy with the smug grin came in to wreck everything, even with the distraction of her own fingers against her needy clit. "It is an honor t-to offer... my body..." McKayla whimpered, the pleasure finally getting the better of her as she squeezed her thighs tightly around her hand as an overwhelming climax crashed through her quivering body.
McKayla spent the next few days telling herself that she should really stop masturbating to weird and creepy fantasies of being turned into a submissive, brainwashed fucktoy... and the next few nights finding newer and more blatant ways to indulge those same fantasies. She watched the brainwashing sequence from the movie several more times, as well as looking online to see if the film ('Our Man Flint', apparently) had any sequels that elaborated on the whole hypnosis scheme. It didn't, but there were some scenes of women being brainwashed by subliminal messages delivered through their old-fashioned salon-style hairdressers that McKayla spent several pleasant nights with.
Once the video site got the idea that she liked that clip, it started giving her others in a similar vein. A sequence where two women were enthralled by a magic spell that turned their eyes into blank, unseeing orbs of pure white. A scene from an old superhero movie where a British character actor used alien technology to render a bubbly blonde scientist into his helpless slave. A sequence in a made-for-TV movie where aliens attempted to condition another blonde with disorienting lights and colors. More spy movies and TV shows from the 70s, almost too many to count. McKayla soaked them all in, finally admitting to herself after almost a full month of masturbation that she had a fetish.
Even so, it came as a shock to her to find out that other people had the same kink. She stumbled on it almost by accident, following a series of suggested videos one Friday night with her hand idly rubbing her cunt that led her to something she never thought she'd see... an actual, factual brainwashing video. McKayla didn't click on it, not that first night, but the description made it pretty clear that this wasn't a fantasy scene pulled from some cheesy science fiction movie like the Orgasmotron or the Jedi Mind Trick. It was real.
