It was one night in Equestria and the citizens of Ponyville and Canterlot were about to get some sleep for the night. That is until a huge tremor started to happen and the ponies looked outside and they looked in horror at what they saw. It was a humongous orange fox with nine tails swinging behind it. It looked down at the citizens with its angry looking red eyes for it goes in for the attack.

"Long ago, a giant nine-tailed fox spirit appeared in Equestria. It was unlike anything we had ever encountered. With it's mighty tails and unimaginable rage, it was able to cause massive damage and killing innocent ponies . The Royal Guard rose to defend the ponies from the beast."

"Hold the attack all of you! Wait for help to arrive!" One Royal Guard shouted.

"Its getting closer! Don't let it near the castle!" Another one said as they do their best to hold the monster fox back.

That was when a bright golden yellow furred unicorn with a bright orange mane and tail with a tint of yellow on it while wearing a shiny golden robe came in to come face-to-face with the nine-tailed monster as he gets ready for combat

"Out of all the ponies in Equestria, only one was capable of challenging the Nine-Tails head on. He was able to seal away the beast in the body of a young mare named Sunset Shimmer. But, at the cost, this brave stallion lost his life in order to do so. He may have died, but his heroism will live on for he was known as Sundust The Golden Wizard of Equestria."

(Years later)

Things had changed since the attack. Right now, we see the Crystal Empire and there are six ponies and one dragon that were coming out of a train. We see the small purple and green dragon named Spike, a pink pony named Pinkie Pie, a orange pony with yellow mane and tail along with a cowgirl hat named Applejack, a white unicorn with indigo mane and tail named Rarity, a yellow pegasus with pink mane and tail named Fluttershy, a light blue pegasus with rainbow mane and tail named Rainbow Dash and a purple unicorn now turned alicorn with a lavender mane and tail named Twilight Sparkle. Recently, Twilight had been given the position as the princess of friendship by her mentor, Princess Celestia, and she's now on her way to the princess summit with her friends.

"Hoowie! Your very first Princess Summit. You must be over the moon Twilight." Applejack said with a smile.

"I am excited. But, to be honest, I'm a little nervous too." Twilight said feeling a bit uneasy.

"You're nervousited! It's like you want to jump up and down and say "yay me"!" Pinkie said while jumping with a lot of excitement. "But, you also want to curl up into a teeny tiny little ball and hide at the same time!" Pinkie said as she started rocking like a ball. "We've all been there!" Pinkie said giving Twilight a noogie.

"I'm there almost everyday." Fluttershy said.

'You've got no reason to freight, Twilight. Everything is going to be just-!" Applejack was the interrupted by Rarity.

"Twilight! Sorry, Darling. But, I just realized you're not wearing your crown. You haven't forgotten it back at Ponyville, have you?" Rarity asked to her purple alicorn friend.

"It's in my bag. Just feeling a little self-conscious about wearing it. Haven't been accustomed to these yet, either." Twilight said as she shows that she still needs to work on her flying.

'You are a princess now, Twilight. Embrace it. I'm telling you, if I had a crown like that, I would never take it off. Why, I would sleep in the thing." Rarity said as Twilight was giving her the "of course you would" look with a smile.

When the doors to the Crystal Empire castle opened, the guards started to play their horns to honor the entrance of the Princess of Friendship. Speaking of which, she was paying any attention to where she was going as she bumped into a orange royal guard with blue mane and tail.

"Her highness. Princess Twilight Sparkle." The guard said respectively.

"Twilight. I haven't seen you since the coronation." A pink alicorn named Cadence said as she hugged Twilight as she came with Celestia and a dark blue alicorn. Her sister, Luna.

"We have so much to discuss. But, it can wait until tomorrow. You all looked tired from your journey. Now, off to bed, all of you." Celestia said as everyone started to turn in.

After unpacking her things, Twilight found her crown and puts on. But, when she looked at the mirror, she doesn't seemed to be enthused by her new title.

"What's the matter, Twilight?" Spike wondered.

"I don't know, Spike. I'm just worried, I guess. Princess Cadence was given the Crystal Empire to rule over. What if, now that I'm a princess, Celestia expects me to lead a kingdom of my own?" Twilight wondered nervously.

"That would be awesome!" Spike said with joy.

"No! It would not! Just because I have this crown and these wings, it doesn't mean I'll be a good leader." Twilight said as she puts the crown on the night stand.

"Sure you will, Twilight. Come on. You should get some shuteye. Big day tomorrow." Spike said as she tucked Twilight into bed and turned off the light before going to sleep.

However, Spike woke up when he heard a noise. He turned to see Twilight trying to keep her new wings in.

"Can't tuck. Just trying to get comfortable." Twilight said as she struggles to keep her wings down.

She thought she had it, But, they bounced up to and she groaned in dissatisfaction.

(Opening intro and theme)

With everyone now asleep, they would not know that there was an intruder in the castle. The intruder managed to get passed the guards and got to Twilight's room. She, quietly, got to where her crown is. She almost smashed the lamp accidently before she catch it. She put it down and replaces the crown with a fake one. She then tripped over Spike's tail and landed on the floor. That woke Twilight and Spike up and Twilight sees the thief has her crown in her pocket.

"My crown! She's got my crown!" Twilight yelled.

The thief started to run and Twilight started to run after her.

"Stop! Thief!" Twilight yelled as her friends woke up too. "She's stealing my crown!" Twilight said as the others followed her.

Twilight then uses a teleportation spell to get in front of the thief.

"Stop!" Twilight said.

But, she didn't as she teleported too, leaving her cloak behind. She was the revealed to be an orange unicorn with yellow and red mane and tail before she continued to run away. She looked back to see the six ponies following her as she picked up the pace. Twilight then jumped on her and rolled into another room before the crown started bouncing everywhere before it disappeared into a mirror.

"What did you do to my crown?" Twilight asked the thief.

"Sorry it had to be this way, Princess." The thief said before jumping into the mirror too.

"Who was that?" Fluttershy asked as they waited until tomorrow to explain this to the other princesses.

(The next morning)

"Sunset Shimmer. A former student of mine. She started her studies with me not long before Twilight. But, when she did not get what she wanted as quickly as she liked, she turned cruel and dishonest. I tried to help her, but she, eventually, decided to abandon her studies and pursue her own path. One that had, sadly, lead her to stealing the crown." Celestia explained.

"She replaced Twilight's with this one." Spike said as he shows Celestia the fake crown.

"I supposed Sunset Shimmer thought you wouldn't notice right away that this was not yours. And by the time you did, it would be too late to go after your crown and Element of Harmony." Celestia said.

"But, I don't understand. Where did she go? Where did she take the crown?" Twilight wondered.

"You'll soon learn more about this place than even I do." Celestia said.

She then lead everyone to the room where Sunset Shimmer escaped through the mirror, much to Twilight's confusion.

"This is no ordinary mirror. It is a gateway to another world. A gateway that opens once every 30 moons." Luna explained.

"Sparkly!" Pinkie said as she touched the mirror before Luna pushed her aside, gently.

"It was always been kept in the throne room of Canterlot Castle. But, when Princess Cadence took over the Crystal Empire, we sent it here for her to watch over." Luna said.

"I had always hoped that Sunset Shimmer would someday use it to return. To come back to Equestria seeking my guidance. Obviously, this is not what has happened." Celestia said feeling like there is no hope for Sunset to come home.

"Twilight, you must use the mirror to go into this other world and retrieve your crown. Without it, the other Elements of Harmony have no power and Equestria is left without it's one of it's important means of defense." Cadence said and Twilight nodded understanding what she must do.

"Your crown does not belong in the place Sunset Shimmer now calls home. And, in her possession, your Element of Harmony will no doubt be used to bring harm to the inhabits of this other realm. They will not have the power to defend themselves." Luna said.

Twilight looks at the mirror for a moment before Celestia gives her a knapsack.

"Do you understand the importants of your task?" Celestia asked.

"Of course." Twilight said.

"Good. Then you must go at once." Celestia said.

Just as Twilight was going to enter, Rainbow Dash got in her way.

"Whoah whoah whoah! She's going, we're going with her. Right, girls?" Rainbow Dash said with her friends next to her.

"Ooh, I'm so nervicited!" Pinkie said.

"You do realize that's not a real word, right?" Applejack said.

"I'm afraid I can't let you go." Celestia said.

"What? Why not?" Rainbow Dash asked not happy.

"Sending all of you could upset the balance of this alternate world, creating havoc that would make it impossible for Twilight to get the crown back from Sunset Shimmer. This is something Princess Twilight must do alone." Celestia explained.

"Time is of the essence. On the third day, when the moon reaches its peak in the night sky, the gateway will close. And once it does. it will be another 30 moons before you will be able to use it to return." Luna said.

Her friends cheered her on for her to comeback as she goes to the mirror portal. She made it in and Spike followed her into the portal with her.

"Spikey Wikey!" Rarity shouted as she sees the little dragon disappear too.

"Oh! That can't be good, can it?" Applejack asked nervously.

"I'm sure he'll be fine. Especially, with Twilight with him." Rainbow Dash said.

Celestia looked rather more nervous than the others as she leaves the room. Luna noticed it and followed her sister to talk to her.

"Are you feeling alright, my sister?" Luna asked.

"I'm fine, Luna." Celestia said.

"If this is about Twilight." Luna said.

"No. I know she'll be okay. It's Sunset Shimmer I'm worried about." Celestia said sadly.

"You mean because of what happened all those years ago?" Luna figured.

"Indeed, Luna. I just hoped Twilight can get the crown soon before "it" comes out. Otherwise, I fear for us all." Celestia said.

What Celestia didn't mentioned is that Sunset Shimmer carries within her the most dangerous creature ever existed. The Nine-Tailed Fox. If the other ponies find out about it, it would lead to an even bigger disaster. Not to mention, it would add salt to the big wound in her heart because she was an outsider before Celestia took Sunset in because she's the Nine-Tails Jinchuriki. That maybe one of the main reasons for her dark behavior. Now, all that is left is hoped that Twilight gets the crown back and, perhaps, find a way to heal Sunset's broken heart.

To Be Continued