Janine Baxter was a cleaner at the local 24 hour gym. It was 3 in the morning and the small gym was completely quiet. The last members had left at 1:30 and therefore Janine didn't have to worry about anyone disturbing her. She was listening to a podcast about losing weight, as she was a big girl and had struggled with many diets. She had long black hair hung all the way down her back, green eyes and big pink lips. The 35 year old was a size 18 and filled out her once baggy clothes. Her stomach rolls were visible under her white top and her fat arse wobbled with every step she took. She walked into the female toilets with her mop and brush and began cleaning the floor. She caught a glimpse of herself into the mirror, and almost winced at the sight. She was such a fatty, she was embarrassed at her size and wanted to make a change, but this didn't come easy to her. She longed to be one of the ladies that men would crave, but she had never received any attention her whole life. This was about to change tonight.

The green portal sparked open, and the 7 foot beast clambered through. It sniffed its surroundings as it came into the new world, and instantly picked up the stench of prey. It was wearing a cheap perfume and it's natural smell was that of a sweaty, plump being. The hunt was on. The alien creature began stalking down the corridor until it came to a glass door, with its target on the other side. It was feeding time.

Janine finished in the ladies toilets and made her way to the staff room where she would grab her belongings and make her way home. On the way there the main entrance door swung open and in walked a member. It was a thick black women who was in a smart business dress, a peculiar outfit choice for the time of night. Her stomach was compressed by a dark brown belt which gave her a hourglass figure and she was quite a pretty girl. She looked as though she was only in her twenties and definitely had boys chasing her. Janine looked up and gave her a warm smile but was met with a long hard stare, almost as if she was looking into her. Janine broke eye contact and began walking towards the staff room, but saw in the reflection of the mirrors that the lady was strutting behind her, in the complete opposite direction of the changing rooms and the gym. Janine took her earphones out and turned around. The women looked her up and down, and Janine thought she caught her licking her lips. She ignored it and put on a friendly smile.

"Can I help you at all?" The woman stared at her for a second before smiling back with a toothy grin.

"Yes, I came in earlier and lost my phone, I was wondering if it's turned up anywhere?".

"Oh, I can certainly have a look for you in the office, give me a minute and I'll be right back" Janine replied.

"Would you mind if I came with you? Just to identify it?" The mysterious women giggled. "Um, sure". The women walked forwards before placing her hand on Janines shoulder. "I'm Becky by the way"

"Hi Becky, I'm Janine". The two obese ladies walked down the corridor. Becky's stomach gurgled slightly and she moaned in delight as it happened. Janie ignored her strange behaviour but picked up on a distinct smell coming from her, like gone off egg. Janine unlocked the door and pulled open the drawer of the desk. She rummaged for a bit before pulling out 3 phones. "Any of these look familiar?" She received no response. She turned around and to her suprise Becky wasn't there. She walked back out the office and saw Becky with her back turned looking at the staff member board.

"Becky, um, are you ok?" Janine nervously asked. She received no response in the form of a voice, but instead a wet sloppy fart rippled from her fat bumcheeks.

"Janineeee, Baxterrrr" she moaned out. "Such a perfect body for us, so round and juicy."

"Becky, you're scaring me" Janine said panicking.

"Ahaahaah, always the same, such timid little creatures, don't worry, you'll be the first of many in this establishment. You will serve a better purpose than what is currently your miserable existence. Or should I say, your skin will…"

Becky turned around slowly, and what Janine saw nearly made her faint. In the middle of her forehead was a large metal zip.

"Don't be scared Janine, soon, you'll be just like meeee" Becky moaned.

"What are you" Janine said in disbelief.

"I am Slitheen!" Becky raised her large black arms to her forehead and began tugging. A blinding blue light struck out as she smiled in pleasure. Janine was too stunned to even move, she could only watch in sheer horror. She then began tugging her head down, more and more, before a large green figure popped out. The black skin carried on slowly falling from the large green alien body, before coming to a stop at her waist. She stretched out her true form in ecstasy. "LITTLE HUMAN, runnnnn!!! Janine finally managed to get her legs moving and turned as fast as she could down towards the main gym. Becky shook her fat hips and the belt that was holding her human stomach in place snapped and her belly flew out, before rolling off her. "THE HUNT SHALL BEGIN!" She cried.

Janine hid behind one of the pillars, shaking in fear. She had to be in a nightmare, surely, but no pinches were waking her up. She peered round and saw the large green beast enter the room. "Ohhhh Janine, I know you're in here! I can smell your sweat. Come to me! Your life as a human is pathetic, come to me and join me, I'll make you so much more!" Becky was simply toying with her prey, she knew exactly where she was, but the act of longing the hunt out would make her feast all the much sweeter. "Becky was just like you, a nobody, trying so hard to fit in, but as soon as I smelt her, I changed her life. Made her so much better. My sister needs a skin, and you just fit the bill. Speaking of which, i think you should turn around!

Janine felt a warm breath on the back of her neck, and turned slowly to see another creature. Before she could even scream it lifted her above the ground against the pillar, and roared in delight. "A perfect hunt sister, shall we? It asked. Becky walked round before giggling, "of course my sister. Janine had tears streaming down her face, before her fat neck was crushed in a instant. Her limp corpse flopped to the floor, and the two aliens wasted no time in feasting on her insides.

An hour later, Becky and Janine walked out of the entrance of the gym. They both farted in joy and their eyes rolled back. "Tomorrow, my sister, we will feast on the members here!" Becky said

"I can already taste their sweat, Janine said drooling in delight. The two sisters would be very busy in the near future.