Alex stood, heart racing a bit as she stood in front of the teleporter. “The world is uninhabited, right?” She asked the Breeder Corp woman standing beside her, finishing up the last of the contract. “Mostly. Some docile flora and fauna are present - but nothing hostile, we made sure of that!” the suited woman said with a smile, Alex’s grip tightening on the leash. “Now then,” the woman said, more authoritative than before, “let's go over this one more time, as this is your last chance to back out with no repercussions.” She said, skimming over documents on a handheld pad. Alex nodded along as she continued “You will be classified a Breeder Corp. Contractor, in the terraforming and homesteading division. You will, upon arrival, have a home with enough basic need to last the both of you at least a year. By then, our drones will have hopefully set up farming and hydroponics stations around the landing zone that should be able to sustain you indefinitely.” She said, scratching one of the chins of the unique canine~ “‘Cerberus’ is all we’ve been calling her, but of course you’ll have naming rights upon landing.” The massive canine was excitedly wagging her tail. “Your primary objective is to take this darling with you, and breed her to the point of population stability. Upon landing, she will become your property, as will any offspring you create, up to the point of contract termination.” She smiled at Alex. "You will also be provided with our most cutting edge and experimental fertility treatments to make the process even faster and enjoyable~” she said with a giggle, hips swaying and wiggling. “This is a one way journey with a 100 year duration, are you sure you want to proceed?” she asked, holding out the tablet for her signature. Alex didn't even hesitate in signing her name, locking her in for a whole century of breeding~


Alex took a deep breath, stepping towards the one-way portal. The helpful attendant smiled. “Be sure to grab the two shots up on your right! Have a safe journey~” She said with a wave, and Alex looked to the indicated shelf to find a pair of handheld injectors full of a glowing liquid. Snatching them into her pocket, she stepped forward into the dimensional rift. “Here goes!~” She said, jumping forward into the unknown~ The little Cerberus bounding along behind, her cute, puppy-like energy causing a smile to form on Alex’s lips~ The trip was near instant, like stepping through a curtain of ice cold water. Shivering from the sensation, Alex almost didn’t notice the change of scenery at first, before reorienting herself and looking around. “Woah…”


The first thing she noticed was the mountains surrounding the valley they had landed in. “I’d only ever seen pictures of these.. Wow!!” She exclaimed, then looking to the forest in front of her. “So many..” she said, before feeling a nudge from behind. “Hey girl!~ You make it safely too?” She said, kneeling down to scratch her ears~ “What to call you..” She said, biting her lip a bit as she did. “Always wanted a dog named Fluffy~ So let's go with that!~” She said, to the excitement of her four legged friend~ “Mmm~ you seem to understand quite a bit!~ Ready for the medicine?” She asked, pulling the two vials from her pocket. One was pink, the other blue. “Hmm~ think you'll get the pink one, and I'll get the blue one~” She spoke, uncapping the little needle on each of them. “Alright.. Let's do this~” she said, a quick stab into her own thigh, then another into the feral’s hindquarters. She had barely finished with Fluffy’s injection before she felt herself getting hot all over. “O-oh, fuck~ this stuff is STRONG~” she panted, grabbing at the collar of her jumpsuit, trying in vain to remove it quickly but eventually restoring to just tearing it off, desperate to relieve some of the intense heat filling her veins. With every beat of her heart, her cock grew harder and harder, an erection rising with such fervor it probably would have ripped the suit open on its own~! Panting heavily, trying desperately to handle the heat, she looked to her canine partner to find that she, too, was feeling the immense strength of the drugs~ each of her three heads was panting desperately, clearly in the midst of the deepest heat of her life~ 


“A-aah~ Fuck this feels good!!~” Alex moaned, stroking her cock~ her sensitivity had exploded too~ every tiny sensation felt like she’d cum on the spot~ but she knew she'd have to save it for her mission~ “C-come here girl~” she panted out, Fluffy crawling over and raising her hind to her new master~ As she raised her trio of tails, Alex discovered something else the genetic anomaly had three of~ “Oh, look at that~ three hot pussies, already soaked for me~” Alex purred, her cock throbbing with need~ she needed no further encouragement to SLAM her cock deep into Fluffy’s middle cunt, moaning as her dick, more sensitive than ever, was wrapped in the softest fuckhole she had ever felt~ “F-fuck~ this is better than anything i’ve ever felt!!~” She cried, ramming all the way to the pup’s cervix~ before she could even grasp all the sensations she was feeling, her cock pulsed as a thick rope of cum painted the inside of her partner~ and still she continued to fuck with reckless abandon~ 


All 3 of Fluffy’s heads were in various stages of orgasms themselves, and Alex couldn't help but adore her~ shoving her fingers inside the other two pussies, she was sure her partner would be just as satisfied as herself~ “Fuck!!~ M-my nuts~” she moaned, looking down and saw them swelling with how much seed she was producing~ the tension should've hurt, but it felt amazing!~ Not as good as the feeling of cumming though, so she turned back to that center pussy and went back to ramming her seed deep inside~ using her fingers buried in those doggy cunts like handles to pull her partner back onto her over and over~ “mmmph, you’re just like a fucktoy, aren’t you? My adorable little doggy fleshlight~” Fluffy could only whine and bark softly as she was used so wonderfully~ agreeing that she was just a breedable fleshlight~ before alex even realized, Fluffy’s belly had begun to bulge with just how much seed Alex was pumping out~ “D-definitely pregnant there~ Next!~” She said, pulling out and immediately slamming into the left spade~ a hefty rope of cum shooting onto Fluffy’s back as she switched, marking her even further as a cum slut~ this one felt even tighter than the last, squeezing out every last drop of leftover seed from that orgasm~ Fluffy then shot up, taking Alex by surprise as she shoved her master onto her back. Alex watched with lust and love as the canine raised and dropped her jiggly, fat ass over and over atop her cock~ “G-good slut!!~” Alex cried, grabbing the base of her doggy-slut’s tails~ Once again using it like a handle to ram up into Fluffy’s womb~ “mmmh, gonna make sure that none of your wombs go without my cubs~ we’ll keep going until you’re a fucking blimp from all my cum~!” She groaned as she came again, astonished at how her refractory period had basically vanished thanks to those treatments~ She held fluffy down as her cock twitched and spurted rope after rope of cum~ painting the inside of the doggy slut with even more cum~ it only took a single orgasm this time to make Fluffy’s belly grow even larger~ “Am i cumming even more now?~ Fuck thats hot!~” She said, grabbing Fluffy and slamming her third unused pussy down in a similar way~ with only two or three pumps, she was dumping yet another womb filling orgasm inside of the doggy~


Another effect of the treatments, Alex discovered, was a seemingly endless supply of cum~ by the time night began to descend on the valley hours later, Fluffy’s wombs were so filled with cum that she couldn’t even move~ the bloated belly was even larger than Alex, pinning the cute pup in place, sitting on her rear and looking up at her master, begging for even more breeding with cute little whines~ “Sorry cutie, but I’ve gotta sleep… Today was exhausting! I’ll be sure to breed you again bright and early tomorrow, though, okay?” she said, giving fluffy scritches on all three of her heads. “Doesn’t look like those fabrication drones have made it yet… where am I gonna sleep?” she wondered aloud, looking out at the grasslands around them. While thinking about what patch of dirt looked the softest, she felt a trio of tongues lick at her cock~ looking down she discovered that Fluffy was craning her necks just to get a taste of her thick cum. Alex giggled at the sight, and then grinned “hmm, you know, I think I know the perfect spot to spend the night~!”


Alex slept spread face-down on Fluffy’s giant belly, using it like the world’s softest waterbed~ Her cock, though, was wrapped in Fluffy’s tight central throat, her middle head taking that fat dick all the way to the base~ her nose buried in those overfull balls, getting blasted with her master’s musk~ her other two heads didn’t slack off either - each was licking and slurping on one of Alex’s nuts, kissing and sucking at every inch~ every few moments, Alex’s nuts would clunch and spurt another load of seed into the bloated belly of Fluffy~ By the time dawn broke, fluffy was already being lifted off her feet by just how much seed was dumped in her overnight~ Alex couldn’t help but smile at the first days handiwork~ “A century of this?~ Fuck this is gonna be the best~” she said, slipping off Fluffy and heading straight back to those gushing, plump spades~