Since making his fortune discovering a way to triple the milk yield in dairy cows, Dr. Gary Felton had used his wealth to develop his interest in lactating women. His development of the drug to work in human women had led to the establishment of the science institute for just that purpose. Along with Sally, his partner in business and love, they took great care in selecting attractive young women to exchange their former lives for one that revolved around their breasts.

It had been a tough five years since I left university. Back in my native Manchester and staying at my mom's, I was used to rejection. With no proper job, no boyfriend, and few friends, I had no idea what was wrong with me. I mean, I liked what I saw in the mirror, and I had a piece of paper that said I was really clever! Then, out of the blue, an opportunity came up which was to change my life. A group of wealthy men were developing a drug to make women lactate on demand. That’s worth a lot of money on the markets.

Tough investigative reporter Lucy had her life completely overturned when she broke into the Science Institute and discovered Dr. Felton's milking operation. To keep her quiet he converted her into one of his human cows. Sold to an American farm, she was content to eat grass and be regularly milked and humped until a tornado upsets her daily routine.

Twenty-one-year old Carrie was on a gap year from university and had nailed a great job on a dairy farm. On her first day she was told under no circumstances was she to go into the quarantine shed. On her second day, she found she needed to! What she found inside was a deep shock to the innocent young woman - human females being milked! Within minutes she was on the way to joining them, strapped to an infernal machine.

Sarah, the stunning young health and safety inspector, had adapted to her life as a human cow surprisingly well. Joel the dairy farmer now looked after all aspects of her former life for her, managing her finances, emails, and text messages. And then, all of a sudden, a desperate email from her younger sister leads to the sluttish and over-confident Melissa turning to him for help out of desperation. Joel was only too willing to welcome her into his herd.

Maria gets transformed into a hucow and is claimed by a rancher called Ulf who turns her into his personal cow and sex slave.

Maggie had fallen on hard times, and money was running out fast. She could see no way out of her situation until she answered a mysterious advert in the newspaper for participants in a medical trial. With the promise of a large payday, Maggie signed up. Having been drugged to make her more compliant, Maggie now found herself in a milking pen, strapped up to a complicated supporting structure. Kept subdued by a drug added to the contents of her feed - which was available to her through a carefully positioned pipe - Maggie had no idea that she was just one of hundreds of such women participating in the same ‘trial’.

Lauren, the horsey-looking English girl, was now the newest recruit in a Texan pony ranch. Restrained and transformed in a tight-fitting pony suit, she was tethered to a rail in her stall and used relentlessly throughout the night. Now her first proper day of training begins and she is determined not to disappoint her Master.

When Jenny and her friends Nicole and Kim are kidnapped from a club, the girls have no idea what the men have in store for them. But when they three are taken to a secret facility run by Doctor Tsutomu Sato, a genius who enjoys turning men and women into human pets for the rich and powerful, things get crazy for Jenny and her friends. After an erotic slideshow, Jenny gets separated from the other girls and starts down a twisted path that ends with the skinny college co-ed being transformed into a thick and sexy, pampered pet cow!

When 19-year-old Jessie is offered a job on a milk ranch out in the middle of nowhere, it seems too good to be true. Meeting the gang of tough mountain men who run the dairy farm makes it even better. And when she finds out just what goes on in the cow barn and what they really want from her....

Clara's been watching the handsome stranger in her diner. When she gives into an insane urge to make her presence known, he spirits her away to his ranch, where destiny takes an unexpected turn. Harsh control and toe curling pleasure are what Royce does best. The little waitress he shackles in his barn has no idea what awaits her. To earn his love, her domination must be complete. Life at Royce's ranch is the fast track to becoming his property for breeding, milking, and unfathomable delights…

Serving on the hucow farm is hard for any eighteen-year-old girl. Growing ever bigger and more productive, being handled by strangers with her massive dripping udders emptied by eager hands and mouths, or attached to machines for fierce suction pumping, while her juicy, ripe body is available to all who want to use them is bad enough. But it's even worse for the once-aristocratic Daphne, as the men of the farm take a cruel revenge on her.

Diane was a young surrogate mother who had just given up her baby. She was bored and depressed and need to earn some money. Her days were now spent in searching the job ads and continuing to fill her fridge with breast milk - she liked to express it and couldn't bring herself to stop. Finding an ad for young surrogate mothers wanting for paid research seemed to be a dream come true. Her interview with Professor Ed Dorking was not quite what she expected though.

Investigative reporter and Hucow escapee Lucy was back, but on her own terms. Tempted back into a life of milking and highly charged sex, she ensured the deal she cut allowed her complete autonomy and a chance to make a difference as a Hucow welfare worker. Visiting all of the girls that had been converted, trained and sold by Dr. Felton was a great way to ensure they were being well looked after, but it also exposed her to a risk she hadn't considered.

Diane, the surrogate mother, was quickly adapting to her new life in the institute. Milked several times a day, her pussy was also available to the staff whenever they wanted it, which was a good thing, as her libido was sky high. Once into her daily routine, she was ready to meet the professor's clients.