In a room in the Royal Palace, a small number of females are gathered for a sleepover. At the moment, they were all sitting/laying down in a circle, eating snacks, lounging in their sleepwear.

“Thank you again for allowing us to have our little get together here in Canterlot.” Rarity said to the princesses in gratitude. She sat on a luxurious red couch, other than everypony who would sit Indian-style, while dressed in an almost see-through black lingerie. It was obvious that she wasn’t wearing anything else.

“You should thank Pinkie for having Barb sent me a scroll asking to do so.” Replied Celestia, who was wearing a white fluffy robe that just barely covered her modesty.

“I can’t believe you actually did that.” Groaned Starlight, dressed in a half T-shirt that shows her midriff along with a pair of cloth shorts.

“Welcome to Equestria, Starlight.” Rainbow commented, barely containing her laughter, as she floated in the air. She just had on a black sport bra and a pair of light blue boy shorts.

“And you said you wanted to have a slumber party but had no place to slumber.” Pinkie happily stated.

“But calling the princess to--” Starlight didn’t get to finish as Pinkie was suddenly in her face with a very serious face, glaring at her. The only part of her body on the floor were her hands, the rest of her was perfectly parallel to the ground.

“No party will EVER get cancelled if I have anything to say about it!” Pinkie said menacingly. Her breast fully exposed due to her shirt, that barely covered her breasts in the first place, slid to her shoulders. Pinkie suddenly felt herself being pulled by her tail and made to land on her bare flank in her yellow thong.

“Simmer down there Pinkie,” Applejack said, “you’re scaring the poor girl.” She was wearing a shirt tied around her ‘girls’, as well as a pair of red boy shorts, that barely cover her supple rear.

“Well, you definitely scared me.” A tiny voice spoke from inside a sleeping bag.

“Is she always that jittery?” Asked a confused Moondancer, who was wearing a black long-sleeved shirt, while trying to hide her pink high-cut panties.

“YES!” Everypony answered in the room before going into a fit of giggles.

“Well, I, for one, am happy to be back here. I was really surprised to receive an invitation.” Sunset Shimmer stated, while wearing a fiery-red bra and panty set. “And I’m sure Twilight would thank you for letting her come...if you can keep her from admiring this place.” Sunset remarked as Twilight (who was still trying to get use to her new wings and horn) eyes wandered around as she looked at the interior of the castle. She was even more amazed that her principals and her elder stepsister were also princesses of Equestria. She learns her male counterpart crossed into her world before and helped saved it twice. She was actually interested to meet him.

“I also, the Great and Powerful Trixie, am humbled and honored to being invited as well.” Stated the showmare wearing her trademark hat and cloak, along with a blue bra and panty set that were a couple of shades darker than her fur color.

“Excuse me?” a shy yet enthusiastic Twilight Sparkle, wearing a black sports bra with a pair of pajama bottoms, said as she returned her attention to the group.

“I was just wondering how...my male counterpart...is faring?”

“He wasn’t doing too good when we left.” Barb answered, wearing a Tshirt and pair of cargo shorts.

“How so?” Asked Cadance, who was wearing a robe almost identical to her aunt Celestia's but pink instead of white.

“Well, he looked like he was in pain. We tried to make sure he was okay, but said he just needed some rest.” Replied Starlight

"Not only that,” Barb added, “but he not only gave us the rest of the day off put the guards as well.”

“Oh my!” a worried Fluttershy said, crawling out of her sleeping bag, wearing a white long-sleeved shirt and a pink thong. “I hope he’ll be alright by himself.”

“Indeed.” Said Luna. She was wearing a black lace bra and panty set that was almost see-through. “Weird happenings can occur during a full moon, so cauti--”

The sound of a cup and saucer shattering on the floor interrupted Luna and bought everypony’s attention to Celestia. "Oh dear,” Celestia quickly stated as she used her magic to clean up the mess. “I think I need some air. Please, excuse me.” Celestia quickly teleported out of there, leaving everyone confused, and Luna quite concerned.

"Okay, now Princess Celestia is acting weird." Barb remarked as she took a sip of her soda.

"I'm sure my sister is fine." Luna added to Barb's statement.

"That is rather surprising though." Rarity added as she used her magic to pass around a tray of cucumber sandwiches for her friends. "She seemed rather nervous when she left."

"You think something big is happening tonight?" Asked Sunset Shimmer.

"Pbbt...as if. I doubt anything would be happening tonight." Rainbow Dash continued as she opened a bag of carrot chips. She then get a sly smile. "Besides," she said she as she crept up behind Sunset,"If us time to ourselves, but to play some naughty games." She finished her teasing with a firm slap to Sunset's butt, causing her to yelp.

"What the heck Rainbow Dash!?" She shouted, her face a nice shade of crimson.

"Relax Sunbutt, I was just messing with you." She giggled.

"Yeah, clearly. And don't call me Sunbutt." Sunset growled, which only caused Rainbow to start laughing. Frustrated, a blushing Sunset went to sat away from the hysterical pegasus.

"Aw, learn to lighten up. I was only--" RD got cut off when a lightning bolt zapped her behind, causing her to yelp and jump towards the room's chandelier." What the heck was that?" She asked shuddering like leaf. She frantically looked around until she spotted a smirking Princess Luna with her horn glowing. Next to her, was a blue cloud with small sparks jumping around it.

"T-that was so not funny." RD stuttered while blushing from embarrassment.

"It was just a joke Rainbow Dash, lighten up." She teases, as the other girls started laughing at RD's misery.

"Yeah I get it. I'll lay off." She groaned floating back down to her seat.

-Balcony-

Celestia walked out the balcony outside her bed chambers. She tried to calm herself as she looked at the full moon under a starry night sky.

"I pray that I am wrong. If what happened with Dusk, happens again..." She paced around the balcony remembering the last time her former student's dark side emerged.

"No! I won't let history repeat itself. Not again. But what can I do?" Celestia pondered, "I don't want to scare everyone and reveal Dusk secret if everything really is alright, but I can't take the chance that he's not." Celestia continued pacing, know if she doesn't get to the others soon, they will start asking questions she doesn't want to answer.

"I GOT IT!" She exclaimed, immediately covering her mouth at her volume. She walks over to Philomena, her pet phoenix, and roused her from her slumber. "I am sorry for disturbing you, but I have an important task for you." Philomena did not look too happy, but listened anyway.

"I fear something could be wrong with Dusk, but I don't want to raise any alarms in case I'm wrong." Philomena perked up, as if waiting for further instructions. Celestia quickly jotted down something on a small piece of paper and tied it to the phoenix's leg.

"Take this note to Ponyville--" Philomena gave a very loud squawk at hearing this. "I know that it's far, but I need to know if Dusk has his situation 'contained'. "This tiny scroll," Celestia then lit her horn, and the paper around the her pet's leg glowed, "will teleport you back to here to my chambers. If nothing's amiss, just rest here. If not, come to me as soon as you come." Philomena gave an unhappy chirp. "Okay, I'll get you some exotic fish." Philomena peeped happily and flew off. "I just hope that Dusk is alright." Celestia thought to herself as she returned to the other mares and their slumber party.

"Hello girls, I'm back." Celestia spoke in her angelic tone, catching the other's attention.

"Hi Princess Celestia, what happened earlier?" Barb asks.

"I just felt uneasy about something, but I got worried over nothing. That's all." Celestia added.

"Are y'all sure Princess Celestia? Y'all seem kinda worried about something." Applejack added noticing Celestia's nervous expression.

"Don't worry about it my little ponies. Let's just enjoy the time we have now and enjoy our little get together." She added hoping to drop the conversation. Luckily, Pinkie Pie just happened to change the subject.

"How about we play truth or dare?" She asked everypony while randomly pulling out an empty beer bottle from her poofy pink mane. Twilight and FlutterShy had deep blushes on their faces at they both knew where games like that led.

"Oh...."

"Oh....my..."

"Oh come now Pinkie, that game is so childish." Rarity added. But Rainbow Dash wasn't having any of that.

"You scared Rarity?" She teased causing some of the mares to go 'ooh' around Rarity.

"I'm not scared, I just find-" Rarity was cut off by Applejack as she placed an arm over her shoulder.

"Come on now Rarity, it's been kinda borin' just sittin here talkin'." Rarity wanted to say something, but couldn't really find any words. Plus in a sense, Applejack was right.

"I have to agree." Cadence added taking a sip of her punch. "I'd rather not sit here all night without doing something fun."

"Alright, let's just get this over with." She sighed giving in.

"Yay, I'll go first!" Pinkie said with glee as she set the bottle down and gave it a good spin.

'I pray to Faust that Dusk is alright.' Celestia thought to herself as she planned on enjoying the rest of the night with her sister, niece and her friends.

-Castle of Friendship-

"Aahn!! Yes!!! More!!!" Adagio moaned as Dusk thrusts into her marehood begging him to let his thick cream inside of her. For the last three hours (which was stupid on his part), Dusk has been bucking the sirens relentlessly. Aria and Sonata both, their stomachs bloated to the size of basketballs again, were currently making out with each other. Their hands traveled along each other's bodies while waiting to get another filling after their new Master was done with Adagio. At the moment, his newest sex slave was standing with her back against the wall as Dusk continued pounding her. As she clung on to his back, her nails dug into his skin. The harder he bucked his hips, the deeper her nails dug into him. His member was practically scraping at her ovaries as he hit the back of her womb. Adagio moaned as Dusk thrusted into her marehood, begging him to release his thick cream inside of her.

"You're getting bigger inside of me master." Adagio moaned. Dusk soon groaned as he felt his balls gurgling, as they started to swell up for another thick release.

"Take my seed in your slutty body." Dusk remarked with a smirk as he suckled on Adagio's milky breasts. She instinctively held his head in place letting her new master drink as much milk as he wanted. She and her sisters had only one purpose in life; pleasing their new master in any way he commands. Nothing else mattered. Dusk soon groaned, as he released another massive load into Adagio's womb. Adagio let out a throaty moan as Dusk released shot after shot of semen inside his slave, while the muscles in her tunnel tightened around his shaft, desperately trying to milk him of every drop he had. After a few more squirts, Adagio slumped in his arms.

"Aw, and it was just getting good." He quipped as he pulled her off his stallionhood and placed (or threw) her on his makeshift bed to join her two sisters. Aria and Sonata noticed milk leaking from their lust dazed sister's tits and both mares took one of Adagio's breasts into their muzzles.'s Dusk admired their little scene, but his mind wandered elsewhere. He still had a changeling queen, two powerful unicorns, and an Alicorn to deal with.

'Alright, now who do I go after next? I have four more mares to tame, but it's six hours till sunrise. Not to mention they could use their magic to hinder my movement.' Dusk thought to himself. He then turned to look at the siren sisters. 'I'll have bigger problems if they find these three in their current state.' Noticing his distress, Sonata stopped sucking on Adagio's left breast and she looked at her master with concern.

"What's wrong master?" She asked.

"There are four other mares I want to please, but I have so little time to do it. Plus they all have access to powerful magic, so I'm at a loss." Dusk stated walking around his slaves. Sonata observed her master with her heart-shaped eyes, waiting for him to give her another helping. Dusk pondered for a bit on what to do, until he remembered when he was captured a few hours ago.

"Sonata," Dusk called, causing her ears to perk up, "tell me, what did you use to bind my magic previously when I was captured?" He asked her.

"We used a magic inhibitor ring, but after you transformed, it was destroyed. But we had 4 more just in caseous first one failed master." She answered cheerfully.

"And where are these inhibitor rings?" He asked. Sonata turned around and pointed towards Adagio's littered remains of her clothing. Dusk was confused, but used his magic to levitate Adagio's skirt towards his hand. He then reached into Adagio's pockets and found four inhibitor rings.

'Clever girls.' Dusk thought as he held the rings in his hand. A devilish smirk soon formed on his face, as he clenched his fist with the rings in hand. "Too bad it was all for nothing, and now I have the edge." He added as he opened his hand. The rings that once carried a green color with black shards now carried a black color with red heart shaped shards.

"Let's see them use their magic now when these are placed on them." He smiled to his slave admiring his newly enhanced inhibitor rings. "Why thank you for telling me about this Sonata." Dusk said while caressing Sonata's cheek. She cooed in response from his praise. "I think you deserve a reward." Hearing Dusk say that caused her ears to perk up even more. "But I need to do something first." He added. When Sonata's ears drooped slightly, Dusk caressed her cheek. "Don't worry, I'll be back for you three very soon." Dusk assured her, as his red eyes glowed brightly. Sonata flinched as her eyelids grew heavy. Before she slumped to the floor and Dusk levitated her sleeping form onto the bed, where Adagio was still having her teats sucked by her sister Aria.

"Aria. Adagio." Dusk called getting their attention.

"Yes master?" Both mares replied simultaneously as they sat on their heels on the bed. Their heart-shaped eyes focused on their master.

"I have to go for now." He said and like Sonata their ears drooped in sadness.

"Y-you don't want us anymore?" Adagio asked dishearteningly.

"Please master don't leave us." Aria pleaded, as both mares clung to his legs. They looked up at him with pleading eyes not wanting him to leave. Dusk placed his hands on both of their heads and smiled.

"I never said I was abandoning you, I just need to go and tie up a few loose ends. Then I'll come right back." He explained, prompting his slaves to relax and let go to his legs. "If you girls wait patiently till I get back, I'll reward all of you." He added as he knelt beside them.

"Of course master."

"We will wait for you."

"Good." He replied as his red eyes glowed again. Both mares became drowsy and soon fall asleep. Dusk levitates them onto the bed with their sister. He then leaves the room, closing the door behind him. 'Now, to hunt down the other four mares roaming my castle looking for me.' Dusk thought to himself, smirking as he walked among the shadows 'til he reached one of the many room doors. He turned on the light(s) as he entered his bedroom. He found a desk with a few chairs and a bench with a cloth on it. There was also a large king size bed on the far right of the room with an open window next to the bed. He walked toward the window and looked outside to see the full moon.

"Perfect. I still have time to go after the mares-- Hm?" Dusk stopped himself when he saw a small shadow that blended into the moon. The figure looked distinctively bird-like and it was flying towards the castle. Dusk hid in the shadows of the room and waited for whatever was flying towards the castle to land. It soon perched onto the window sill. Dusk peeked from his hiding spot and noticed what touched down. Celestia's pet phoenix Philomena flew onto the window sill looking around to find Dusk.

'That damn bird!' Dusk thought angrily when he saw her. She spoiled his fun last time when he had a mare alone. She ratted him out to Celestia, who showed up just as he was about to claim a mare. But soon, a wicked smile formed on his face, when he thought of the perfect way to get even with her. 'There's an old saying that payback's a bitch. Now you will know my pain.'

Author's Notes:

I thought I would set up an interlude with how well the first three chapters turned out. Also I watched the season six finale a while back so I may have to change my prologue again, but I hope you enjoyed this chapter. Celestia is the only pony who knows about Dusk's condition, and it looks like Dusk is moving onto bigger targets. Things are really going to heat up in the next chapter. Also big thanks to Frankie2 for helping me start it off.