Celestia walk down the hallway of the vaults that hold many secrets and treasures that she has put away in her long life. She stops at the vault that... could had been her daughter's tomb. She was so close in losing her, if she hadn't made that bomb... she would had died and she wouldn't had even known till she open the vault to get the mirror out.

The vault door suddenly open by itself in front of her, causing her to step aside as the heavy door swung outwards. Her eyes widen as she stares at what was hidden behind the door. Her mind breaking apart as she refused to believe what she's staring at in front of her. It was dried up, the husk had curled up in a ball before it died. Staring with empty eye sockets at the door that refused to open, staring at her.

Celestia step backwards refusing to believe what's in front of her. She wanted to run away and find her daughter to prove to herself it can't be true, even with what's in front of her. Then in a raspy voice, it spoke.

"Mom why did you let me die?"

Celestia run down the hallway trying to escape the horror in the vault, only to find more horror in front of her. The vault doors that lined up the hallway all open revealing another Sunset behind each one. Each of the Sunset's died a different way, one died by fire, another by water, one with her heart cut out, one carrying her head, all of the Sunset's all dying one horrible way after another all asking the same question.

"Mom why did you let me die?"

She then came to the final vault door that open itself up in front of her. The Sunset that came out of it completely broke her upon seeing her. This one was completely naked, covered in dried cum and other fluids that kept the filth on her broken body. She held something small in her arms that's covered in blood, a cord made from flesh connected what she's holding in her arms and going up her cunt. This Sunset look up at Celestia who is frozen in horror. She spoke in a completely empty voice as she had nothing left inside of her to feel anything anymore.

"At least you're a grandmother now."

Celestia jolted up in her bed, covered in sweat and her face covered in tears. Her dreams since her daughter came back to her is always filled up nightmares. It always had something to do with Sunset and her seeing what happen to her, because of what she did to her. But it seems that without Sunset in bed with her, so she could hold her body against hers. The nightmares grows worse as she remembers how at first she slept in the chair besides the bed before sharing the bed with her daughter. And now without her daughter with her, the guilt she still has inside of her is coming back.

"I do wonder if you have the same level of guilt with me?" Nightmare Moon ask as she revealed herself standing in front of her bed.

"Luna?" Celestia ask wondering if she was still dreaming.

She got her answer as magical chains made out of shadows lash out from her bed's headboard and shackled her arms. A ring came was quickly placed on her horn preventing her from using her magic. Her bed sheets were pulled off of her to reveal her naked body to her sister, who is leering down at her helpless form.

"It's been a long time sister. I came back after you banish me to my moon for a 1,000 years. I have been looking forward in making you pay for that, you bond like this unable to use your magic while, I and anyone I choose make you our cum dump. But then, I discovered that in the time, I was away you went and had a daughter. Not by birth but if you dream is anything to go on, you deeply care for her. I have seen her and she is a sweet young thing, so small but her scent makes me want to stuff my cock into her. She's so small, unlike the many lovers we use to share between us, the plump and cheeky ones were what we use to love being our bedmates. But your daughter, Sunset on the other hand, I can get use to having a taste of the little ones," Nightmare Moon explains to her sisters. She's going to be taking her time thanks to the spell she place on the room, making sure no one is going to be bothering them.

"No! Sister please no, not Sunset. I almost cause her to die. Use me as you want just leave her alone!" Celestia pleaded with her sister.

"Oh sister you have been holding back too long. You would had fuck your daughters young and tender body in the past. And using a compressing spell on your cock? Sister you should had shown your daughter your real size and shown her how to take it," Nightmare Moon said.

"I was different then. But, I am her mother and will not harm her again. Sister she is simply too small as a human to take either one of us at full size," Celestia said.

"You mean this?" Nightmare Moon ask as she makes her armor disappeared revealing her naked body that is in every way equal to her sister's. Her massive cock began growing as it filled with blood, 17, 18, 19, 20, before stopping at 26 inches of powerful cock with its elongated, glistening head already leaking precum and a set of huge cum filled balls.

"Sister you saw Sunset. You know she will never be able to take you inside of her," Celestia said her eyes glued onto the cock she hasn't seen for a 1,000 years.

"Oh don't worry," Nightmare Moon said as she climb onto the bed and rested her cock on her sister's pussy lips. "You're going to be the one who gets to do it first, she is your daughter after all."

"What?" Celestia ask.

"I'm going to bring back the sister, I use to know. It's time for Molestia to return and show all of our little cum buckets what it is to serve underneath us," Nightmare Moon smiles as she slams her cock into her sister.

Nightmare Moon smiled an evil wicked smile and grab Celestia's legs and placed them on her shoulders. Letting her pump her cock deeper into her sister's busty body. She bent down to make out with her as she slammed her throbbing clock hard into her sweet and tight pussy, snacking her big balls against her ass. She looked deep into her beautiful and terrified eyes, as her dark magic mixed with her cum began to infect her body. She fucked into her and leaned down to kiss her sister passionately as her mouth defied her and she accepted her savage tongue and longing lips that drooled and sucked all over hers. Celestia had long for the touch of her sister since she banished her and her sister in turn has been waiting for this day too.

Celestia groaned as she felt a continuous wave of intense orgasm flow through her as she cummed all over Nightmare's massive cock. Feeling her massive ball sack pounding and smashing against her perfectly round bubble butt cheeks. Nightmare obsessed over Celestia's incredible buxom and soft body, as it is as she remembers it. She rose up like a fearsome beast arching her back and pressing all the weight of her powerful body into Celestia's poor wet pussy. As she balled up her fists and pressed them down tightly against the mattress to the sides of Celestia's waist and just in front of her curvaceous sexy hips pinning her sister down for a deep hard fuck session.

For several long hours the room was filled with violent sounds of heavy sweaty meat pounding against meat. Nightmare has been waiting for this day and wasn't going to be satisfied so easily with a few dozen cumming deep into her sister's body. No she will break down her sister's will with mind breaking pleasure and pump her full of her dark magic infused cum. She wouldn't banish her sister, no she will be at her side and turn this land of a never ending night of sex. And her niece will be with them as a family.

!

Ponyvile -

Twilight and her fellow herd members kept watch as Sunset slept with Lyra watching over her. Twilight look outside to see what looks like all of Ponyvile falling over themselves to get everything ready before the princess gets her. With Sunset revealing herself to be Celestia's daughter and making her the crown heir, made all of Ponyvile panic. As with the two of the leaders in charge of the Summer Sun Celebration upsetting Sunset, one with her being set in her ways and unwilling to change, then the other who is too busy trying out stunts to do her job. May make this the last time the princess would ever come to Ponyvile. Which is way all of Ponyvile is doing what they can to make it up to Sunset.

"Looks like the sky is clear," Lemon Heart said looking out of a window.

"And looks like Applejack has all of her family members helping out in making none apple meals. The other farmers are bringing in their own food as well," Bon Bon said. A steady stream of ponies with apple term cutie marks are coming and going, carrying food trays to the town hall.

"Rarity looks like making the decorations simple," Moondancer said as she watches said mare take some of the fancier decorations down. Sunset made it known that she doesn't like the culture of the upper classes and nobles. Which her mother agreed with her as she is also tried of it, but as ruler she has to bare it.

"And looks like Fluttershy is getting her birds and the mares forming a band are getting ready," Twinkleshine said seeing said mares with their stuff going into the town hall.

"I wonder if it's going to be like this next year with the next place the princess sends Sunset to oversee the Summer Sun Celebration?" Minuette wonders out loud.

"Word will spread about this so the next place shouldn't make the same mistake of upsetting Sunset. All the other overseers having a bad time is one thing but with Sunset being the princess's daughter, once Celestia hears about this Ponyvile will be lucky if she ever even thinks about holding the Summer Sun Celebration here again. But of course that's if Sunset is sent to oversee things again," Twilight said.

"Well many other royals in other lands do send their children to over see important events," Moondancer said. "But of course with her revealing herself and making the ponies of Ponyvile to redo everything. Will make it look like if she doesn't like something she will get her mother to blacklist the place that doesn't make her standards. Or make her upset."

"If Sunset didn't do what she did, who knows what would had happen. Sunset being gangbanged by most of the ponies in Ponyvile would have made the princess be filled with unholy rage. Seeing how they wouldn't be able to control themselves and not stuff her with their giant cocks," Lemon Heart said remembering how many of the mares are in Bon Bon and Moondancer's size range.

"Once they smell her scent they won't be able to control themselves with her. Unlike us the princess won't be around for us to have sex with," Twinkleshine said. "Which reminds me Twilight you said that the princess doesn't have sex with ponies who never had sex before but did with you."

"She tries to keep herself from doing that. But with how much She was turn on and you know how powerful Sunset's scent is when she is turned on. The princess couldn't risk herself being in a highly turned on state with Sunset with her and needed me to relieve some pent up lust," Twilight said blushing.

"And made it hard to follow that monster cock of hers and the skills to go with it," Moondancer said.

"Well it's not like you didn't like how she used her cock and skills on you. You came like crazy when it was your turn to be stuff by her," Bon Bon said smirking at Moondancer.

"You should talk," Moondancer said back.

"I am the only one who she used her true size on," Bon Bon said her body shaking remembering the monster the princess revealed that's hanging between her legs and good it felt when it was stuff into her.

"Taking Moondancer is one thing.... but the princess is bigger, longer and has years of experience to back it up," Minuette said.

"Of course Sunset did make a big scene when she was suddenly saw her mom's true size," Lemon Heart said remembering how she moved out of the way after spraying her load on Sunset's face blindly her till she wipe all the cum off, only for her to get an eye full of her mom's giant size cock.

"It did help that Bon Bon wanted her to lick it," Twinkleshine said.

"I done it with my mother," Bon Bon said.

"Yes but remember Sunset mindset is still like that of a human's and incest is a big taboo there," Twilight said.

"Too bad the princess's cum is so tasty and once she uses her real size it just keeps leaking precum," Minuette said.

"I think it's because of it size it needs to do that," Moondancer said as her cock does do the same but not as much as the princess.

"I'm hard now," Lemon Heart said revealing her cock that has become hard with all the talk about sex.

"Me too," Minuette said as she head upstairs.

"Where you think you're going?" Twilight ask.

"Going to see if Sunset is up for some fun," Minuette said walking up the stairs to the second floor with the others following her, in case Sunset is up for it.

On the second floor they found both Lyra and Sunset together at the bed by the window. Sunset is sitting up on the bed her head nestled on Lyra's chest with a nipple in her mouth suckling the milk within. Lyra is enjoying the milking from her visible hard-on., which Sunset hand is stroking. Sunset stop when she saw the other girls staring at her.

"Too tried for sex?" Bon Bon ask grinning.

"I was hungry and Lyra offered her milk," Sunset said blushing. She has just gotten use on drinking breast milk and with her mom feeding her that way for so long she just gotten addictive to it. With her own herd and all of them having milk filled breasts, she has just gotten use to drinking milk before going to bed. It helps her sleep.

"And jerking her off?" Twinkleshine ask.

"I wanted something out of it," Lyra said.

"I just getting her ready for you girls. Remember all of you are going to give Moondancer a good fucking," Sunset said.

"Oh yeah," Moondancer said blushing.

"But since you're still up we're going to need some help from you," Bon Bon said.

"I said no. I want to sleep not covered in cum and, I'm still sore from Minuette," Sunset said as the reason why she had Bon Bon carrying her around all day, besides getting back at her from rolling on top of her when they were sleeping.

"Fine," Bon Bon said walking up to the bed. "But first thing first."

"What?" Sunset ask not liking how Bon Bon is looking at her.

Sunset found herself on her back on a pillow on the floor, with her lower half up in the air. Her bottom is being held up by her herd mates with her legs spread out, allowing her seven herd mates easy access to her pussy. Which all seven of them are fighting over for her sweet juices that none of them can't get enough of, using their long and thick tongues. They're pressing their facings against each others, their mouths wide open as they lick and press their tongues against each others, all of them focus on the tasty honey pot in the center of their tongue orgy. Sunset was trap as all seven of her herd mates held her bottom up and pressing their bodies against her that's in the middle and her head between Moondancer's legs. Their tongues are so powerful and thick all fighting over the right to lap up her juices. They even take turns pushing their tongues deep into her pussy like a cock making her cum like crazy. And the girls have no intention of stopping anytime soon.

"STOP IT!" Sunset shouted causing the girls to let her go letting her bottom fall. Leaving her panting on the floor with them surrounding her.

"What's the matter?" Twilight ask worried.

"You girls are my herd mates but you can't just grab me and force yourselves on me," Sunset said growling.

"You just smell so good and so tasty," Lyra said.

"Just go and fuck Moondancer," Sunset said. "Now someone float me to bed so, I can get some sleep or, I'll tell mom!"

"Ok," Twilight said as she lifted Sunset up with her magic and place her back on the bed to recover.

"Alright time for a gangbang," Lyra said as she tackles Moondancer and positions her on her hands and knees so she can give her a good fucking.

"Hey!" Moondancer shouted only to be muffle as Lemon Heart stuffs her cock into her mouth.

"Where's Spike?" Twilight ask remembering she hasn't seen him for awhile.

"He went outside to taste the food," Twinkleshine said waiting her turn.

"Oh," Twilight said.

!

Outside -

Applejack eyed the town's clock tower as in a few more hours the sun be coming up. All of the Apple family are working non stop to fix up everything before the princess gets here. They been cooking up one meal after another that has no apples in them and setting up new tables, the other farmers are helping by bringing their own cook meals for the Summer Sun Celebration. Everything has to be prefect or it be the last time the princess will ever come to Ponyvile for the Summer Sun Celebration, and might be the last time any Apple be in charge of the food or be put in charge of getting things ready anywhere in Equestria.

"Come on we got to get everything ready!" Applejack shouted at her kin as they had setup a field kitchen to cook up all the new food dishes.

"Sis we're going as fast as we can," Applebloom said mixing something in a bowl.

"Yup," Big Macky said stirring a pot of stew.

"Me and the cakes are almost done with our meals," Pinky said.

"And the weather team are done and helping with everything else," Rainbow Dash said.

"I hope that the birds won't be upset with all the noise," Fluttershy said who is carrying a tray into the town hall.

"Well, I'm done on my end. Nice and simple like how princess Sunset said," Rarity said.

"I can't believe that ape like thing is the princess's daughter," Sweetie Belle said who had helped her big sister.

"I thought Bon Bon had a pet," Scootaloo said.

"Don't talk about that!" Rainbow Dash said to her little sister. (1)

"We're already in enough trouble as it is without her hearing you talking about her like that," Applejack added.

"But sis you're the one who refused to add more dishes that didn't have apples in them. Which gave Sunset a bad impression on all of us, which is why we're all cooking to try to make it up before her mom gets here," Applebloom said.

"Yup," Big Macky agreed.

"And Dash you're the one who was too busy goofing off to do your job till the last minute. And splash mud all over her and her friends," Scootaloo pointed out.

"And Pinky breaking in to throw her an orgy which she didn't want as she is only interested in having sex only with her herd. Didn't help at all or her pointing her cock at her," Vinyl Scratch spoke up.

"But everyone likes parties!" Pinky said.

"Setting up a surprise party is one thing but breaking in to do so with a complete stranger is another," Derpy said with a tray of muffins in her hands.

"I didn't really care for you breaking in my house after, I move here," Octavia said.

"But that is how we met," Vinyl Scratch said to her herd mate.

"There is that," Octavia said smiling a bit at her lover.

"You should had set it up somewhere else and then bring her to it. In fact all three of you should had been on your best behavior with anyone who is overseeing the Summer Sun Celebration. This is the last time any of you be put in charge of any event," Mayor Mare said who is all but pulling her hair out having learned that 3 of the mares in charge of the Summer Sun Celebration had insulted the overseer, who is the princess's daughter. Mayor Mare maybe only the mayor of a small farming town but she knows what happens if you make a bad impression on the princess.

"It's not that bad," Cheerilee said who organized her students in helping getting everything ready.

"Are you kidding! If the princess decides to make this the last time she'll ever come here because of those 3 upsetting her daughter. Will cause doom for all of Ponyvile. The money that we get from the crown might be cut because of this and once ponies learn about this they might stop visiting the town which means no one buying things," Mayor Mare shouted in panic.

"I can make things up! I'll throw a big party for her!" Pinky said.

"Another surprise party that will scare her more then she enjoys it?" Rarity ask.

"Yeah Sunset really doesn't like being surprise like that," Spike spoke up getting everyone's attention.

"Spike? What are you here for?" Fluttershy ask.

"To taste the food," Spike said. "Got to make sure there's no more apples in the new dishes."

"Spike?" the other ponies ask.

"He's the baby dragon Twilight who is lead Sunset's herd when she isn't around," Fluttershy said.

"Oh," the other ponies said.

"So Spike what is princess Sunset like?" Rarity ask.

"And why doesn't she like orgies?" Pinky added.

"Well Sunset lived in the human world for so long that she just pick up some of the habits and one of them being that they view sex as something that should be remain behind close doors. And from what, I have seen she is scared of how big some of the mares cocks are both Moondancer and Bon Bon are the largest in her herd and from what, I overhear they haven't had sex with her yet. Mainly because of how big they are compare to her like some mares have trouble with having sex with others who are smaller then they are. It's the reason why the princess uses a shrinking spell on her cock so she wouldn't be limited to only ponies as big as her. The princess has been sharing her bed with Sunset and her herd helping Sunset learn the ropes in sex and making sure the others don't go too far with her," Spike explained.

The ponies around Spike all stared at him trying to make sense of what they just heard. Till Fluttershy cough getting everyone's attention.

"From what Spike told me earlier today. Sunset was trap in another world for years where humans live and she lived as one till the portal home open for her. She remain as a human coming back and the princess has been very protective of her ever since and been seeking a way to turn her back into a pony," Fluttershy said.

"So Sunset been away from her mother for years?" Applebloom ask.

"Yes," Spike said.

"And she doesn't like orgies because of how small she is compared to us?" Pinkie ask.

"The princess uses a shrinking spell on her cock?" Rainbow Dash ask.

"I do have problems in finding someone who can take me," Big Macky said. She's the biggest mare in both body size and cock size. She sticks with other Earth Ponies because of her sheer size which scares smaller ponies.

"Forget that how do we get on her good side?" Rainbow Dash ask. With Sunset being the princess's daughter and once said mother learns about what happen, she could kiss her chances with being in the Wonderbolts gone.

"I don't know really," Spike said.

"Come on you got to know something. If, I don't Sunset will tell her mom and when it comes to me trying out for the Wonderbolts. there's no way I'll ever get in," Rainbow Dash said.

"Since you never said sorry for covering Sunset with mud and showed her you care more about being a Wonderbolt then doing your job," Scootaloo said.

"Hey!" Rainbow Dash shouted glaring at her little sister.

"Well action do say more then words, I think," Spike said hoping that he got the wording right.

"If we all pull together we can hope that it will be enough," Applebloom said.

"Or if Pinky, Applejack and Rainbow Dash would do anything to make things right. And, I mean in being her and her herd cum buckets," Vinyl Scratch said.

"WHAT?" said mares cried out.

"If you can think of something better be my guest," Vinyl Scratch said.

"That wouldn't work," Spike said.

"Good," Applejack said not wanting to be used as a cum bucket by the princess and her herd.

"Sunset doesn't have a cock," Spike said.

"She doesn't?" Fluttershy ask.

"Nope. Turns out humans like dragons like me have two different genders," Spike said.

"Really?" Sweetie Belle ask.

"I thought there was something strange about her," Rarity said thinking about her putting clothes on Sunset when they first met. She fought off her attempts to undress her completely and her herdmates made sure she stop after the first time.

"So what do we do?" Pinky ask.

"I have no idea," Spike said to the disappointment of the ponies around him.

!

Later at the Town Hall -

Sunset stood on the second floor balcony with Moondancer and Twilight on either side of her. She's looking over the speakers so that it be ready for her mom so that everyone can hear her. The others are down with the crowd in the hustle and bustle of the town ponies who are putting the finishing touches on the part where they contribute. Many of the ponies been up all night to fix up everything to the liking of Sunset. Others are seated at tables enjoying the food many of which are still nice and warm. The last of the meals were made just as the train came in with the royal guards for the main event when the princess comes in to bring up the sun.

The 3 main branches of the Royal Guard position themselves for the main event. The first were the Solar Guard, the most elite of Equestria’s guard and Celestia’s personal guard. Their duty was to personally protect Princess Celestia from assassins and protect the capital of Canterlot and the castle. The next guard was the Unicorn Guard their general duty was to monitor and protect large cities like Canterlot while also being on call at a moment’s notice to create barriers to repel attacks. The Pegasus guard, comprised of Equesnia's best fliers with the Wonderbolts being a special unit. They handled all things sky based and were the guards and forces of all the cloud cities.

"I hope that you find everything to your liking princess Sunset," Rarity said who walk up the stairs to talk with Sunset.

"The food unlike before now has more then just apple dishes. The sky is now clear of clouds. The decorations isn't all fancy like the parties, I have been to before. And there be a follow up after the birds," Sunset said listing things off. "Yes mom will like this. But of course the first 2 only happen because of me revealing, I'm mom's daughter. Which won't please her at all."

"Well if there's anything we can do to make this up to you please just ask," Rarity said as humble as she could.

"I'm leaving with mom after this is all over with so there's no point. I hope the next place, I'm sent to have the sense to listen to suggestions before it become orders," Sunset said having turned on the speakers letting all the ponies below hear her.

"Princess...," Rarity said seeing that everyone heard her.

"I turn on the speakers to make sure the ponies who are too lazy or too prideful know that it's too late. So that, I won't be bothered by ponies coming up to me and pleading with me not to tell my mom on how bad things went for me here," Sunset said before glaring at the pink pony Pinky. "And in case any pink pony thinks that by throwing me a party would make me forget that she broke into the place, I was staying at." (2)

"Hee heh," Pinky laugh as she shrank underneath all the eyes turn on her.

"You and Fluttershy are the only two who were nice," Sunset said.

"I see," Rarity said walking off to join her sister. She was going to be the one to pull the cord to drop the drapes but Sunset took over that job.

"Cue the music," Sunset said looking down at Fluttershy.

The performance officially began as Fluttershy's birds began their song sounding out and echoing forth across the crowded hall.

"Ponies of Ponyvile, as her daughter, I princess Sunset introduce to you my mother princess Celestia," Sunset said dropping the drapes.

Sunset blink as she saw the shock looks of the ponies down below and the gasp they gave out. She turn around and froze in shock seeing not her mother but another Alicorn standing in her place. The dark Alicorn mirrored her mother in body in every way but is clan in armor that covered but still revealed her busty body underneath. And Sunset quickly realized who it is, as spending lock in her mother's room allowed her all the time needed to read through all of her mother's old thing and journals she kept.

"Oh, my beloved subjects. It's been so long since I've seen your precious, little sun-loving faces." Nightmare Moon announced as she was looking at the audience of ponies. looking over the still form of Sunset who stood in front of her.

"What did you do with our Princess?!" Rainbow Dash yelled out as she tried to charge at Nightmare Moon but she was stopped by Applejack grabbing her tail.

"Whoa there, Nelly..." Applejack as she grabbed Rainbow by the shoulder and forced her down Nightmare Moon than began a cold and cruel chuckle.

"Tell us, whom among you know who I am?” Nightmare Moon prompted as her demonic eyes skimmed over the ponies.

"...Yes. You're... Nightmare Moon," Twilight said who like Moondance has her arm wrap around Sunset for protection.

"Well well well, somepony who remembers me. Then you also know why I'm here?" Nightmare Moon ask eyeing the two unicorns who has her niece between them.

"You're here to... to..." Twilight Sparkle began to stammer. Having lost the confidence she had for that moment.

"She's not Nightmare Moon," Sunset spoke up.

"What?" Nightmare Moon ask looking at Sunset.

"She's Princess Luna. My mom's sister and my aunt," Sunset said revealing the truth shocking everyone.

Author's Note

1 - Scootaloo is Rainbow's sister in this fic as the show hasn't shown her parents yet.

2 - Sneaking into a family member home or friend to throw them a surprise party is one thing but doing that for a complete stranger is still breaking the law.