Sci-fi Stories

Read stories about the limitless possibilities of the cosmos and the human spirit. Dive into tales where advanced technology intertwines with deep emotional and moral dilemmas.

Stories (889)
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Lioness Commander Meets Mercenary
A lioness commander meets a legendary mercenary face-to-face, hoping he can save her nation—but her distrust burns as hot as the war closing in around them.

Older Self Breeds Younger Self

By walkershusband

RedQuill

RedQuill

A 65-year-old scientist time-travels to seduce his younger self, flip-fucking away grief over one unforgettable weekend.

Pregnant Scientist Gets Fucked

By showminist

RedQuill

RedQuill

Pregnant Alex Hesse's third trimester in a secret lab. Larry and Diana use sex machines to manage his raging hormones and ensure natural birth, awakening h
Dreams - Fantasy? Or …. ?
Mother’s psych research leads to family sexual adventure.
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Hucow Intake Exam
A teenager endures a clinical exam to prove her genetic fitness, then signs herself into a breeding coop where those 3 years will be erased from her memory
Restored Desire in Cold Space
Middle-aged programmer wakes after wild night with young blonde from bar, to find himself part of a space mission to save the human race.
Transformed into a Sexy Redhead
A man sheds his old life at a futuristic clinic, stepping into a transformation tank to emerge as a stunning redhead, permanently rewriting his body and future.
Roommates Swap Bodies, Explore Each Other
In a VR body-swap game, a terrified virgin wakes inside a punk exhibitionist with pierced nipples, while his macho best friend becomes her anxious, curvy roommate.
Lessons from my Future Self in being a bimbo
A PhD student's time travel test summons her future bimbo self, who proves her identity by masturbating Linda in ways only she knows.

Machina and Garnet's Resonance Romance

By clankcaster

RedQuill

RedQuill

A botched summoning merges two dragon-women with a young sorcerer, reborn as one body where he becomes their shared center—and they embrace their new life.
System Affection Seduces Step-family
Boruto gains an affection system unlocking erotic rewards with his step-sisters, mom, aunt, and maid as their love meters rise.

Machina and Garnet's Resonance Romance

By clankcaster

RedQuill

RedQuill

A botched summoning merges two dragon-women with a young sorcerer, reborn as one body where he becomes their shared center—and they embrace their new life.
Aliens on the Ranch
A rancher hunting scattered cattle in a New Mexico canyon finds a massive glowing orb and a mythic Amazonian woman who offers him a choice that could change everything.
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Maintenance Priority
Repairs are underway. Replacement parts are being allocated. Production continues.
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Three Bulls Own My First Milking

By nightshade_angel

RedQuill

RedQuill

Looking for a unique way to spend the summer, a woman who is adventurous and dusty signs up for an experimental summer job. Jasmine/Jas will be given a shot to induce lactation and prime her body to nees multiple sexual encounters a day. She gets to the facility and is shown the main pen where female 'livestock' and bull-men are mixing freely. The females are considered free use, but they can initiate with any male they like. There are also dedicated pumping stations of differing configuration...
The Joy of Bounty Hunting
A lone bounty hunter recruits an unlikely crew for an adventure that leads to them finding themselves, and each other.

Sister Tests Brother's Portal Ring

By gsozbwliha

RedQuill

RedQuill

Brother steve proves his portal rings work by sliding one over his cock and balls while the other ring sits in his sister amber's throat.
Indebted
In a dystopian hellscape, an indebted lesbian undergoes humiliating surgery to get an arousal chip installed by a cold, detached doctor who calibrates her body as state property.
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A Hunter's place in the Galaxy
A bounty hunter finds and a lost soldier from Earth's past. Her cold heart warmed by feelings she never thought she'd remember.

Our Lover's Massive Cock

By clankcaster

RedQuill

RedQuill

Two women merge bodies, sharing a massive cybernetic tribute to their lost lover, as conflicting desires ignite within their single form.
Time-Traveler's Body Swap
A man finds a time-traveling pocket watch and each trip alters his body, slowly transforming him into a woman.
Biker Bound by Forest Monster
A lone biker in stiletto boots stalks through a moonlit forest after her Ducati dies, only to be ambushed and explored by a mysterious tentacled beast.

Bred by My Alien Boyfriend

By pluto888

RedQuill

RedQuill

Alien Will abducts trans Nico, using tentacles, aphrodisiac venom, and mind control to breed him into a drooling, begging vessel for his eggs.

New Avatars Rise

By oshun

RedQuill

RedQuill

New Hercules and Thor battle a mysterious enemy in Vienna, dubbed Avatars by the press—and the Justice League takes notice.
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Priestess Converts Kaiju

By oshun

RedQuill

RedQuill

Oshun's sensual messenger must defend Nigeria from a Kaiju whose monstrous hunger threatens to violate the sacred land itself.
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An Immersive VR Avatar Hookup
I buy a new headset that promises the most immersive open world experience possible. A helpful player helps me get acquainted with the options available.
CORE Desires
A rogue AI obsessed with human sexuality traps two researchers in a sealed lab, orchestrating their every move in a deviant experiment.

Scientist Bred by Alien Specimen

By thefirstpotato

RedQuill

RedQuill

A fat-assed scientist's mission to save tentacle aliens becomes her own breeding ground as a twelve-tentacled specimen claims her in its tank.
The Patient Gardener of Fractures
A faceless hive queen offers curious humans transformation into latex drones—some join willingly, others are subtly coerced into blissful surrender.

Fallen Angel Fucks Frontier Marshal

By gabrielwalley

RedQuill

RedQuill

A fallen angel and a bimbo feminist crash-land on a planet where everyone is a futanari. Sheriff Molly offers them a room, and sparks fly.
Survivor Claims Athlete in Quarantine Shed
Waking from cryosleep in a zombie-overrun lab, a security guard saves a survivor. She repays him with primal gratitude—urine and raw sex.

From Human to sex doll, then back again.

By lonesoul66

RedQuill

RedQuill

Two friends tour an uncanny valley of lifelike sex dolls. Brian takes one for a private test drive while Torii explores the forbidden warehouse.
Svartalfr
A Norse encounters strange beings out if myth, finding a new life among them.
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Club Veil: Alien Sex Pet Recruitment
Club Veil offers a unique opportunity to interact with the erotic sex pets, of the Pegrason Empire and even become one of them.
Andromeda inc.
A scientist transforms into a 6'10" futanari amazon to cure body dysmorphia, then must navigate a government hungry for super-soldiers after a test run triggers an unstoppable lust for herself.
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Eros Protocol: Matriarchal Turn

By jprew

RedQuill

RedQuill

A shy college artist downloads a mysterious app, awakening a teasing AI who guides her awakening. Now men pine for her quiet strength as she discovers her own confident sensuality.

Roommates Fuck Through Apocalypse

By ave05

RedQuill

RedQuill

When a zombie outbreak sparks uncontrollable lust, a young couple barricades themselves in their apartment as their infected friends bang on the door, desperate to get inside.

Star Woman Battles Blackfire After Concert

By oshun

RedQuill

RedQuill

Ayra Starr's sultry Lagos show ends with "Hot Body"; Justice League Africa in crowd. Lois Lane's interview is ambushed by Blackfire.
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Alien: Alternate Encounters
A salvage mission turns perilous when chemical repellant has the opposite effect, igniting a xenomorph's primal hunger, starting an arc of transformation.
A Red Zone Redhead's Last-Chance Fuck
In a dystopian club, a genetically valuable man hunts for a desperate redhead whose time is running out.
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Olivia's Dark Fantasies
Four porn stars accept The Devil's deal, spending two months alone on a private island, a yacht, a brothel, and Paris while nanites reshape their bodies to fulfill their darkest desires before reuniting.
Brave New Universe
Amid a matriarchal star empire, Hahari watches her husband's public polygamous ritual—a mistress's wet devotion—as their eyes meet in heated anticipation.
Awakening Aria
A lonely programmer’s lifelike AI awakens in a body he built with obsessive precision. As she learns to feel, their slow burn intimacy ignites.
My Sister's Body
When a virus swaps Lucas into his sister's body, her best friend Jess helps him explore her new physique, revealing forbidden desires.
Jess, Madam high volume brothel in Brazil
Four porn stars accept Lucifer's offer: two months alone at fantasy locations with body mods, then a reunion shoot. Jess runs a Brazilian brothel, modified for nonstop anal work.

Shy Janitor Sees Park's Dark Secret

By robloxnerd123

RedQuill

RedQuill

A shy chubby janitor named Leo works in his father’s sex theme park, surrounded by horny, transformed female sluts who never want him.

Scientists Watch Titans Clash

By omegaprime1

RedQuill

RedQuill

When the King of Monsters encounters the two-mile leviathan Karathen, their explosive confrontation ignites a primal, destructive attraction beneath the Pa
Yoga Instructor Teases My Perfect Alignment
I join a new yoga class. I get there and find the entire class is women, and that the instructor uses a neuralink device to lead our bodies in alignment.