A specific idea for a new girl's storyline (over several videos) would be this. Feel free to copy or steal as much as you want, I did*:
A naive country girl arrives to the Big City looking for a modelling job. An attractive long-legged blonde that doesn't realize how large breasts she has.
She arrives to this photo studio run by a black male and his black colleagues. Warning signs such as pornographic images abound, but they convince her they're fully legit and that she doesn't have to show more skin than she wants to.
So she starts by tame modelling in swimwear and underwear. She does notice a list of financial rewards - things like posing topless or kissing the male talent pays much more than the meagre money she can do holding to her puritan convictions.
But she keeps to herself and firmly rejects all their proposals, until they agree on safe things like pulling up the hem of her skirt, lowering the shoulder strap of her dress, or playfully flip up the back of her dress to show her thong and buttocks.
She finds an apartment where she fights off a skeevy landlord, an older really fat black geezer. She struggles to pay the rent given how she refuses to do more daring photoshoots.
She returns to the studio, and again is dismayed by how little it pays to do "proper girl" modelling. Finally she's convinced to show her bare shoulders, and even to smile at the camera topless but covering herself using her hands. She even agrees to the suggestion to bring in a male model to be her "handbra", after all respectable celebrities have done that. She didn't expect it to feel so good however, when the male model cups her breasts in his hands and she marveled at the contrast between her supple pale breasts and his dark strong hands. He even started kneading her nipples and even though she asked him politely to stop, she didn't mind him taking several minutes before actually stopping. When the photographer showered her in praise for being so sexy, she even let it go that he failed to delete the risque pictures where you could clearly see her large nipples.
Flush with excitement, she happily spends all her money enkoying the big city. But she forgot this is rent day. The landlord waits at her apartment door, and suggests he would give her a month's rent for free if she only lets him grope her tits. She's desperate and a little turned on by the prospect of getting her jugs tweaked a little bit more, so she agrees, but gets turned on when he sucks her nipples, and soon she feels his cock between her legs. She hesitates, and he enters her. She protests, but he starts to fuck her properly, silencing her doubts. She does strongly object when he cums in her unprotected womb.
The next day she's determined to earn enough cash to never have to deal with the landlord again, and agrees to more daring photo shoots. Feeling good about the compliments the black owner, the black photographer and the black male model is giving her, she poses topless and agrees to have the male model caress her. Of course, she gets so turned on all three men fucks her repeatedly. She asks them to pull out. They promise to, but never do.
She sits on the bus back home watching a puddle of warm cum ooze out of her pussy pooling in her seat. When she gets back to the apartment she's so dazed and confused she lets the landlord invite her for dinner, as way of apologizing for his earlier pushy behavior. Of course the conversation turns to her photoshoot, and he convinces her to pose for him. As soon as he starts to tweak her engorged nipples her will to resist is drained aaand... he fucks her. She tells him to wear a condom, but he sneakily removes it half way through sex.
He cuddles, staying inside her. She wakes in the middle of the night by him fucking her. She weakly makes him promise to leave once he's done, and he agrees. He doesn't tell her he will fuck her three more times before daylight, cumming inside her all three times.
When he finally leaves, she takes a long shower, but is interrupted by a phone call. It's the agency. She initially wants nothing to do with them, accusing them of taking advantage of her. The owner promises to behave, and offers her a big bonus for some "modest" (but topless) modelling. He manages to compliment her and get her to agree. When she shows up, he's all over her, kissing her, genuinely charming and friendly. Her will to resist melts away and they fuck. He agrees to pull out, but when he fails to, he explains "she's so sexy he couldn't help himself."
Still, he promised her a tasteful (but topless) aloha-themed photoshoot for lots of dosh, so she feels it would be stupid to leave without the money. She complains when the male model turns up naked, but has to agree the deal didn't say anything about what the male model would wear. She resolves to keep her flower garland and short grass skirt on, and tries to not peek at his huge cock, but gradually warms up when the photographer suggest they embrace, then kiss, then the tip of his cock sneaks through the straws of her skirt to electrify her pussy. She feels a wetness, but he explains he can't control his pre cum, and it's all perfectly natural. She can't help but like how he smears pre-cum all over her pussy.
Still, she manages to wrestle free and prepares to leave. They convince her to stay, and perhaps playfully show her bare butt. After a while, she can't resist grabbing the male model's huge cock that is now dribbling pre-cum, and he has her sit straddling it. When the model starts penetrating her, she's alarmed how easy he glides into her, and tells the photographer to make him stop. The photographer fakes concern, and tries to get him off of her. Of course, what he really is doing is kneading her tits and kissing her. Soon, they both fuck her. She tells them to wear condoms. They explain their cocks are too large. She tells them to pull out. The first time, they simply cum too fast to pull out, but they profess to do better the next go. The second time, they simply forgot. The third time, they "didn't feel like" pulling out.
When they're done, the owner apologizes for his employees "getting carried away". He gives her a bonus, and asks her to accompany him to a business meeting with an important investor. He showers her with compliments and is so friendly and enthusiastic she says yes.
He gives her a sexy dress, she showers, and they both leave for a fancy restaurant. She asks for underwear, but he persuades her it would look bad in such a gorgeous and sexy dress. In the taxi he explains how important this meeting is, and how much his studio needs to impress the money guy to invest. She playfully swats away his hands and he seems to genuinely be sorry he can't keep his hands off of her. Of course, in reality the investor and onwer already know each other and this is really a way to show off the girl as his newest discovery.
The investor guy is if possible even more of an alpha black male than the others, and she's clearly taken aback. Still glowing from this afternoon's sex, she lets him touch her all over, as he compliments the owner for his incredible find. She's slightly annoyed the investor keeps directing his remarks at the owner and not directly at her. Nevertheless, they eat and the champagne is plentiful. She playfully resists the investor's advances, trying to tell herself his hands aren't touching her bare breasts and ass. When he finally puts his hand between her bare legs, she asks him to behave. She is pleased the owner has her back and tells the investor he needs to keep his hands above board if this deal is to be made.
The investor laughs it off and suggests they go to the hotel's spa. She protests she didn't bring a bikini, but for some reason the owner brought one, a gorgeous if daring bikini that would show off her curves beautifully. Once inside the hot tub the investor does honor the agreement to keep his hands above board, and above the water line, but he does persuade her to lose her top, he has seen her topless pictures after all. He can't believe her big boobs are all natural and convinces her to let him grope her tits. He can't believe it, but it appears they're all real and natural! The owner also joins in, and she tells them to stop kneading her nipples. "Why?" the investor tells her. "You should be proud, you have an insanely great rack! A true asset for any erotic model, and besides, we're all professionals here!" She does agree her pale breasts look stunning against the backdrop of the men's black skin. They take turns sucking her nipples and her vision starts to haze up with horniness.
At one point the investor simply tugs on her panties to make them fall off, but when her reaction is to sit down into the water to vover herself he stops her. "You have nothing to be ashamed of. Stand up, and give us a twirl! Let me see what I'm investing in!" She blushes but does as she is told. Of course when they start groping her legs and ass, it soon turns to sex. Whenever the guy in her vagina is close to cumming, the guy in her ass refuses to let go quickly enough. So when she leaves she has six loads in her womb, but she feels it's worth it: the owner is promised a huge investment in the agency.
She gets home a bit drunk and tired, and simply doesn't resist when the landlord fucks her, flooding her pussy.
The next morning she turns up at the agency to fill in some paperwork, and both the owner and the investor is there. They are obviously super-happy to see her, and won't apologize for their giant hardons. She does tell them they can't keep cumming inside her like last night, and tell them to pull out. Which they do. For one single spurt only. As soon as they've shot a single string over her tits, they resume fucking and flooding her pussy.
She signs the papers, but before she can leave or even clean up, the owner gets a phone call. The model scheduled for today's photoshoot can't be there. Would she fill in even though on short notice? The owner would pay her well, and the investor thinks it is a great idea to see her in action.
Only when the scene is set up does she realize it is a fully nude softcore scene. The investor persuades her "you're not showing anything we haven't seen before" and so she agrees. She plays a housewife that invites a plumber and the pizza boy into her apartment wearing only a towel, which fails to completely cover her pussy. They both start to look up her towel, then start to caress her naked butt underneath it. At first she plays ignorant, but soon, they rip the towel away and start kissing her.
When they start having sex with her, she protests - it was supposed to be softcore only, remember? They try convincing her "we won't show anything on camera" but she insists. However, in one DP scene she's straddling one of them with the other one behind her. The photographer takes so long setting up the scene she can no longer hold herself up, and slowly, the guys' cock enters her. Everybody pretends nothing is happening until it's obvious they're fucking. Once they're done, the investor can't help himself and joins the scene. Then the owner joins in. Then the photographer. She gets fucked good many times by all five men.
Afterwards, she observes "you really can't keep fucking me like this. I really hope you haven't knocked me up." but she is offered a new job right away. The studio needs a girl to evaluate new male talent. That is, do they have a good enough cock, and can they get it up on camera? He's already here, so why not earn a good bonus before calling it a day?
"Why not?" she thinks. Not bothering to clean up, she puts on a generous top and a short skirt and enters another room. There a nervous but athletic giant of a man awaits her. He's very mild-mannered and gentle, setting her at ease. He sheepishly shows her his insanely large cock, and she protests it is too large. She marvels at the size of his cantaloupe-sized hairly balls. He begs her to not give him a failing grade, perhaps she can give him a hand job at least, so he can prove he has what it takes to make it as a male model. Feeling sorry for him, she agrees, still warm and fuzzy with cum trickling down her leg. After a while, he suddenly pulls down her top, explaining he needs visual stimulus to get fully hard. She's so shocked with his enormous size she doesn't protest. Then he starts tit fucking her, and again she doesn't protest, she's too mesmerized by the gobs of pre-cum that oozes out his tip greasing up her rack.
Then he puts her down on the mattress and starts petting her glistening bare pussy, explaining he's close, and just need a small push. But he still doesn't cum, and starts penetrating her. She weakly objects, but he explains the only way he'll ever get this job is by proving he can complete full intercourse. She keeps objecting as more and more of his freakishly large cock disappears into her, but she has to agree, absentmindedly parroting his argument anything less than full penetration feels like taking a shortcut. When he finally erupts, ballooning her stomach with the largest ejaculation ever, she protests she's not protected. He apologizes, he didn't know he was supposed to pull out, but keep cumming inside her for what feels like an eternity. She so preoccupied by her growing belly she doesn't notice how he remains fully erect.
By now she's clearly disoriented, and weakly stands up to leave. But he wants to make sure he's getting a passing grade, so he fucks her from behind. Just as she is about to really fight her way free, she's hit with the largest orgasm of her life, and he can easily lower her onto her knees and elbows, and take his time giving her a fuck of a lifetime. By the time her orgasm subsides, she can only hold onto the wild ride, and besides, he's already got her worked up towards a new orgasm, that she simply lets him fuck her. She even welcomes it when he cums hard inside her, and she orgasms even more violently than before.
When she emerges, everybody acts normal, asking her if she gives the talent a passing grade. She weakly agrees, giving him top marks. Everybody tactfully refrains from pointing out how she's covered in sweat, with one of her tits hanging out and her large belly preventing her short skirt from covering her pussy, and how cum is drooling down both her legs.
Then she takes the bus home to clean up, and....
...to be continued
*) a big shout out to Stormbringer who has written several stories using some or all of these ideas
