The goblin cats are the ideas I thought from The Princess and The Goblin. What if Ember can do some spells that no pony can do. To amaze Twilight and Celestia.
Everyway is quiet and there was no pony in sited. The goblin cats had made their way to the Archive, which it is now locked.
"How do we get in?" ask Black claw one of the goblin cats.
"Follow me." said Azrael the smart one. He got his claws on to the wall and begin to climb.
"Oh Azrael, do we have to?" said Whiskers the third one.
"Wake up Whiskers. We always climb on walls, so get used to It." complied Black claw.
"Oh will you two just come on!" snapped Azrael as he went up wall and the other two follow. As they reach a window, Azrael cut a circle of the glass of the window and reach out to open it from the inside of the Archive library.
As they got inside of the Archive library, which it is full of book and scrolls. They search for a secret chamber with ancient books that hadn't been use for years. At last they find it, which is be hide a curtain.
"O.K." said Azrael as they went inside the chamber, "Now let's spilt up and find the book."
The goblin cats had been rampaging around the chamber looking for the one book. They been tossing books around, unfolding the scrolls and made a lot of claw marks one the shaves and wall with their sharp claws.
Until at last, Azrael found the book they were hunting for. It was known the book of lost legends.
"I found it!" she cried, "Just what we've been looking for. Come on help me carry it."
The book was a bit heavy, as they carry it out the chamber, until.
"Who goes there?" Cried a voice coming from the entry, two of the royal guards had heard something in the liberty. As they are on their way and found that the liberty has been rampages. They notice a sound coming from the window, as they got there they notice the open window and the cut on it.
The goblin cats had got away with the book.
On morning, Princess Celestia and Princess Luna heard about what happen and when they looked into the secret chamber with the ancient books, which has been rampages and with scratches everyway.
None of the books were stolen, but one.
"Sister," Luna ask Celestia, "What does it mean?"
Celestia take a deep breath and say, "It means…a new threat will be on to us all and that book was stolen hold great secrets. I don't know who is responsible for this, but we must find out and fast."
Twilight and her friends are at the library with their new friend, Ember Pureheart.
"So Ember," Twilight ask when she turn to Ember, "Princess Celestia said you can do spell that no pony else can do."
"Well yes," said Ember, "I can do some rare spells on my level of studying and some strangest powers I had never known. That's was when Celestia ask me to come to Canterlot to become her new student, to get better with my magic and learn to control it."
"Can we see your spell?" ask Pinkie Pie jumping for excitement, "I would like to see one. That will be so cool."
Twilight was curious about Ember's spell, until Spike burped out a message from Princess Celestia. Twilight take it knowing that the message was for her. She read it, then came with a shock with widen eyes.
"What is it Twi?" ask Applejack in wonder.
"I need to get back Canterlot." she utter with fear, "There's been a break in at the Archive!"
All the ponies and Spike gasped for that terrible news.
"A break in?" Ember inquired with a shock. "But how did that happen?"
"I don't known." said Twilight, "But I need to find out."
"And we're coming!" suggested Rainbow dash, "If there's something bad happen, we'll be there!"
Applejack, Rarity and Pinkie Pie agreed to that. Fluttershy was unsure of it. But if her friends go, she goes.
"How about you Ember?" ask Applejack.
"Count me in." Ember agreed.
"Then let's go to Canterlot." She said, Ember nodded and the ponies along with Spike, hurried to Canterlot.
At Canterlot castle, Celestia and Luna were waiting for Twilight, until she came in with her friends and Ember.
"Princess Celestia," Twilight cried, "we've heard the news. Who had break in the Archive? Is there anything stolen?"
"It happen last night." Celestia explain, "We don't know what it is, but I had a bad feeling."
"Come with us and will show you." Luna suggested.
Then the ponies follow the princesses to the Archive and here the miss is.
The Archive was on guard right now since last night, but they let the princesses with the ponies in, with their promotion.
They come in to the messy library, with claw marks all over and scrolls and books laying all over the floor. Which brings horror to Twilight and her friends.
"Oh, what a mess." Fluttershy muttered looking the state of the chamber.
"Indeed." Rarity agreed, "This place sure use some fixing and cleaning."
"What we know there is more than one thief that break in to the Archive." said Princess Luna looking disgrace.
"But how did they get in?" ask Ember.
Luna show them the window with the cut and the ponies learned why.
"But what were they here for?" ask Twilight.
"Whatever they are," suggested Ember, "They must have been looking for something."
"Indeed they have." sigh Celestia, "The one they stolen was hidden in a secret chamber." As she show them the chamber and it was a big mess. "I've realized they have stolen a book that tells hidden secrets."
"What book was it?" ask Twilight.
"The book of lost legends, which had secrets of powerful objects like the elements of harmony."
That brings fear to the ponies, where the thieves are after the elements or something else.
"From the looks of it," said Applejack looking at the claw marks, "those varmint that break in must have claws and the way they cut that window glass."
"And they're not any creatures I know about." added Fluttershy with a thought as she study the claw marks.
"This is the one mystery that I Pinkie Pie must solve." suggested Pinkie had a detective hat on.
"Then let's go and track down those thieves and get that mysteries book back!" suggested Rainbow Dash.
"How do we supposed to do that?" ask Rarity, "Those scoundrels could be far away by now."
Which made Rainbow Dash be at a dead end.
"Perhaps I can help." committed Ember with an idea, "I know a spell that can help find the thieves."
"You do?" ask Twilight.
"Of course. It is something I've been working on back in my home."
Celestia hoping to believe in her new student and what she can do. "Then that will be a goodtime."
"Come on Ember." said Applejack putting her hoof around Ember's neck. "You're part of use now and it's time to see what you can do."
Rainbow Dash agreed, "Yeah, like you did when we race. That you were so to bet me and Applejack."
Ember nodded with agreement and full of confident. Even with her new friends around her, though she just met them.
Twilight was impress of Ember, she learn that she can do some spell she don't know and can't wait to see it.
Then Luna suggested to the ponies, even her sister. "We must find out what kind of treat we are facing, before thing get worse."
The ponies understand and then Ember began to use a seeking spell, as she use her horn to do her magic. She focuses on the claw marks and in a few minutes, the spell reviled a glowing bubble that can guide to the ones who made the claw marks. That amazed Twilight, she never see or learn that spell before.
Celestia and Luna were amazed too, maybe there's a good reason why they summon Ember here.
"This bubble can guide us right to them." Ember explained, "And from the look of it their still around some way."
"What are we waiting of?" Spike suggested, "Let's get those creeps!"
The ponies agreed and let the glowing bubble lead the way. As they head out the Archive and galloped after it.