"Stay back! I don't know what this thing will do, but if you come any closer I'll shoot!" the suspect yelled, voice shaking with panic as he held what looked like a futuristic ray gun in his trembling hands.

Sergeant Dave Wilson was entirely unfazed by the toy the robber was holding, and immediately rushed down the alley toward him, but was soon stopped in his tracks as he was surrounded by a soft golden glow.

The robber, terrified that he'd just killed a cop, froze for one second too many, and when Dave suddenly came to, he easily tackled the fleeing suspect, cuffed him, and read him his rights.

As his partner arrived and loaded the suspect into their car, Dave picked the ray gun up off the pavement. He briefly noted that it had been damaged in the scuffle, and that the large dial on the side would no longer rotate, before putting it in his pocket and driving the perp to the station for booking.

Arriving home that night, Dave was greeted by his twenty-year-old daughter Michelle, who had already prepared dinner and was eagerly awaiting his arrival. Dave and Michelle had become incredibly close after her mother died, and even though Michelle had been accepted to some very prestigious universities, she had decided to do her first two years at the local community college to stay closer to her father.

As Dave took off his jacket to sit down at the table, he found the ray that he had stuck in his pocket and then forgotten about. Oh man, I'm going to get a ton of shit from the Captain tomorrow for not checking this into evidence, he thought, before showing the ray to Michelle and telling her about the crazy perp that had tried to use a toy gun on him.

As her father showed the ray to her, however, warning bells were going off inside Michelle's head. She had seen something like this somewhere, and though she couldn't quite remember where, she knew that it was dangerous.

"Be careful with that, Dad. I recognize it from somewhere, and I think I remember it being pretty bad news."

"Are you sure? It looks like just a toy gun," Dave responded, but gently placed the ray on the table anyway.

After a few seconds of Googling, Michelle had found the F.E.T.I.S.H. Ray, and went pale.

"Dad, you didn't get shot with this, did you?" she asked worriedly.

"No kitten, I tackled the guy before he could pull the trigger. What is it?"

"It's a device that causes, uh... sexual compulsions in the people it's used on," Michelle responded, a bit uncomfortable at having to discuss sex with her dad. As close as they were, her dad was pretty old-fashioned, so they never really talked about topics like that together. Michelle had had to learn about her sexuality through a combination of the internet and a series of bad choices in high school.

"Wow, really? I didn't think anything like that could exist. That's pretty messed up. I think it might be broken anyway, but I'm glad I took care of the guy before he could cause any trouble with it."

"Yeah, me too," Michelle said, worrying yet again about her father and the dangerous occupation he had chosen for himself.

From there the conversation turned to other topics as they ate. "So how's that boyfriend of yours? Jim, was it? You guys sure seem to be moving awfully slowly."

Michelle was a bit taken aback by the question. She knew that her dad loved her and respected her judgment, but she didn't think he especially liked her boyfriend. At least, he'd never shown any interest in him until now.

"He's fine," she responded a bit tentatively. Then, in a moment of unusual candor, she blurted out, "Actually, he's the one moving slowly. I'm definitely ready to take the relationship to the next level, but he seems to need more time," she said, blushing furiously.

"I can't believe he wants to wait when someone with a bangin' body like yours wants some action," he said as Michelle recoiled in severe embarrassment at his statement.

Somehow, the sight of his daughter's curvy young body had awoken something within Dave, and he welcomed the pleasant feeling of his pants growing tight with arousal as he openly stared at his daughter's nipples, clearly visible through her thin tank top. He was feeling a bit jealous of his daughter's boyfriend, having full access to a young, sexy body like hers and not even taking proper advantage of it.

"Heck, maybe I'll finally try to get back on the market myself. It's been almost ten years since your mother died, and I think it's time I got back into the game like you are. I definitely won't be able to find someone as young and hot as you though," he stated a bit wistfully, softly rubbing himself through his pants under the table as he leered at his daughter, fully aware of her sexual maturity and completely comfortable with a bit of harmless flirting. Heck, maybe she'll even flirt back a bit, he thought, though he was pretty sure he was too old for her to be interested in him that way. Man, if he were Jim, he'd be cumming in that tight little pussy every chance he got.

Michelle, however, was entirely convinced that he was making fun of her, and, feeling a bit uncomfortable with his odd comments, quickly steered the conversation away. The rest of the meal was uneventful, though every now and then Michelle had the strange impression that her father was checking her out.

After dinner, she asked him if she could see the broken ray. She had some experience with mechanical and electrical engineering, and wanted to see if she could figure out how it worked. Dave readily handed it over after telling her to be extra careful, and to be sure to give it back to him when she was done so he could take it back to the station.

As she walked back to her room with the ray, her father's eyes hungrily followed her swaying hips, and once her door closed he headed to the bathroom to relieve some of the sexual tension that being so close to his sexy daughter for such an extended period of time had understandably built up. It never occurred to him that he'd never had this reaction to his daughter's presence before, but he jerked himself off in the bathroom to her bikini photos on Facebook nonetheless, and as the thought of his daughter's creamy thighs and jiggly tits drove him to spurt his jizz into the nearest available washcloth, he found himself already eagerly looking forward to the next boner that the mere sight of his daughter would inevitably give him. He and his wife had certainly done well by Michelle, he thought. Together they had given her a body clearly built for fucking, and he felt practically compelled to be the one to give that body the fucking it deserved.

Back in her room, Michelle sat down at her desk with the ray and pulled out her tools. She examined the ray in an attempt to open it, but was surprised to find that not only were there no screws or other connectors holding the device together, it didn't even appear to have any seams to try to pry apart. Giving up for the moment, she went back to examining it more broadly, this time with an eye toward determining how the device functioned. She stayed safely away from the trigger, and focused her attention on the dial on the side of the device, which was currently pointed at what appeared to be an image of a happy family. The dial had been severely scuffed and bent by her father's struggle with the robber, to the point where she couldn't make out many of the symbols around the edge, and when she tried to turn the dial, there was a slight grinding sound, but no movement.

She noticed that the metal dial had folded on the side just enough to maybe get a screwdriver into the gap, so she grabbed a flathead and started prying. Without warning, there was a small pop as the dial gave a bit, and the room instantly filled with shockingly intense golden light. Michelle briefly heard the pop, but never remembered seeing the golden glow, because the information encoded in the precisely designed wavelengths of light ensured that her mind was fully preoccupied with rewriting large parts of her personality, leaving Michelle with a new set of unconscious desires and appealing erotic compulsions when it was done.

Hmm, looks like that bend in the metal was the problem, she thought, continuing to work on the ray, completely unaware of the new urges that would shortly begin making themselves manifest in her behavior. Within minutes, she had straightened the metal of the dial out, and it once again spun freely.

Across the street, the twins Timmy and Tammy Hutcheson were getting ready for bed when they suddenly saw a flash of golden light shining through their bedroom window. The two eighteen-year-old high school seniors stood motionless beside each other, eyes drinking in the light as the fascinating ideas it carried embedded themselves in their helpless young minds, before the light faded and they continued to undress as though nothing had happened.

As Timmy pulled his shirt off, however, Tammy found herself staring at his toned abs and muscled physique with a hunger that she'd never felt before, though it seemed like the most natural thing in the world to her now.

"Wow, Tim, I've never noticed what a great body you have," she said in a husky voice, unconsciously sticking her chest out to draw his male attention as her interest in him became overtly sexual.

Timmy looked over at her in surprise, but found his eyes suddenly dropping to her chest, drawn to the fleshy orbs hidden by her bra that he had seen hundreds of times before, but which were now becoming more and more enticing to him by the second.

"Thanks, Tam, you're looking pretty good yourself," he grunted as his penis began to rise unconsciously, aroused by the incredibly dirty thoughts that had sprung into his mind at the sight of his sexy sister in nothing but her underwear. He realized that he had never thought about his sister that way before, but, as his cock grew harder and his gaze drifted downward toward the small mound visible through his sister's panties, he suddenly couldn't think of a reason why he shouldn't be filling his sexy sister up with his eager cock.

Tammy thought the same thing once she noticed where his gaze was fixated, causing a warm flush to creep up her nearly naked chest and onto her neck, and once she noticed the bulge growing in his boxers, any resistance she may have harbored against the ray's effects went out the window along with the rest of her inhibitions. Overwhelmed by her sudden need for her brother's cock, she smiled seductively and began walking over to him, reaching a hand around behind her back to unclasp her small bra in the process.

"Why, Timmy, look at you," she teased as she reached down and began to softly stroke him through his boxers. "You're such a big boy, little brother! Something's got you all worked up! We're going to have to do something about that," she said, biting her lip as she smirked up at him and gave his cock a squeeze, causing it to twitch strongly in her hand.

Timmy reached under the bra hanging loosely off her chest, and Tammy gave a small gasp as his probing fingers brushed across her nipples, causing them to harden and her knees to go a bit weak. Now it was Timmy's turn to tease her: his left hand began to massage and pinch as his right slid down his sister's slim torso toward his ultimate goal, and he began to softly stroke her with his fingers as he backed her toward her bed. When her calves bumped against the bedframe, Timmy hooked his thumb through her panties, and with one smooth motion drew them down her legs as he pulled his own boxers down. His cock bounced out and nestled against her thigh, leaving a thin trail of precum on her skin as it throbbed intermittently against her.

She submissively allowed herself to be undressed by him, practically shaking with arousal and impatience as he slowly let her down onto the bed and pulled himself onto her.

"Why have we never done this before?" she asked breathlessly.

"I don't know," he responded, "but God you're the hottest woman I've ever seen."

She flushed in pleasure at the compliment, unaware that his unnatural lust for her body had been instilled by the light they had seen together. She, of course, had been unknowingly altered herself, filled with that same irresistible lust, and as her brother groped her willing body, driving his arousal and his need to thrust his sensitive dick into her fascinating pussy even higher, he finally pulled himself into position to penetrate her, and she realized that she had never wanted anything more. She opened herself to him, and instinctively began to push herself down onto him as soon as she felt contact. Her intense sexual arousal had thoroughly lubricated her young, fertile pussy, and he felt nothing but slick stimulation as his own instinct drove him to push himself into her tight, wet embrace.

Abruptly, however, he was briefly stopped by unexpected resistance. Far too inflamed with desire to hold back, he forcefully pushed himself further into her, feeling her flinch with momentary pain as he burst through her hymen, before she grabbed his hips and pulled him all the way in.

They stared into each other's wide-open eyes as he bottomed out deep inside her virginal pussy, both knowing that their relationship had changed forever, and definitely for the better. Somehow, the fact that they were related made the sex even hotter. As Timmy began to thrust himself in and out of his twin sister, he cupped and squeezed the small breasts that he now found so incredibly alluring, though he had never given them a second look until minutes before, and Tammy's tight pussy inexorably teased him closer and closer to his release. It wasn't long before the erotic idea and sensation of fucking his sibling became too much for Timmy, and the horny teenager found himself reflexively spurting himself into his twin sister's unprotected pussy. The stimulation of her brother's dick spasming inside her was more than Tammy could take, and her body too was overwhelmed by orgasm, the involuntary contractions of her pussy around her brother's still-jerking cock coaxing every last bit of his potent cum into her fertile vagina.

Finally, Timmy pulled himself out of his sister and lay down beside her, softly stroking her irresistible body, similar in so many ways to his own, while she massaged his deflating dick. As she looked at him with eyes full of sexual satisfaction, Timmy knew that he would never be as attracted to any other girl as he was to this one. She knew him better than anyone else ever would, and as his thoughts dwelt pleasantly on the closeness of their familial ties, he could already feel his arousal stirring once more at the thought of fucking her again. Tammy noticed the effect her body was having on her horny teenage brother, and fully embraced her sudden, welcome compulsion to swing over onto him and slide his hardening dick into her once more...

The next morning was a Saturday, and Michelle tended to sleep in on weekends. When she finally woke up and went out to make herself breakfast, the house was already empty, since her father usually worked a short shift during the day on Saturdays. She missed seeing him as she sat down to eat, but, remembering the interest he had expressed the night before in "getting back into the game", thought that maybe he'd get the chance to flirt with some pretty girls while he was out on patrol. Girls do love a guy in uniform, Michelle thought, an image of her dad standing tall and strong in his freshly-pressed uniform popping into her mind. Daddy's actually pretty ruggedly attractive for an older guy, she mused dreamily. She definitely saw what her mom had seen in him. Her hand drifted down to play with herself a bit, thinking of the strong arms that had held her as she grew into the woman she was today, but she didn't let herself get too distracted by her usual fantasizing about her father, because she was going over to Jim's house after breakfast, and didn't want to be even later than she already was.

Once she finally arrived at Jim's apartment the two of them sat down on the couch to watch a movie, but Michelle's leftover arousal from her short session with herself that morning soon drove her to begin rubbing her hand up and down his thigh, getting a bit closer to his cock each time as her libido flared back up. Jim clearly welcomed the attention, and eagerly leaned over to taste her soft lips. It wasn't long before she had climbed into his lap, and they quickly moved on to the heavy petting that had become the norm at this stage in their relationship.

As they continued to make out, however, Jim became more and more insistent, and Michelle could feel his cock growing erect against her leg. This might be the day! she thought excitedly, as he explored the tempting flesh further and further under her clothes, but soon she began to feel inexplicably reluctant, as though he wasn't the right one for her. She was still just as attracted to him as she'd always been, and her sexually aroused body still clearly wanted to feel his hard cock inside of her, but the two of them just didn't seem...