The ponies follow the glowing bubble that Ember made to seek out the thieves, as it goes faster and the ponies had to keep up with it.
"So what kind of bubble is that?" wonder Rainbow Dash wonder as she flies.
"I just summon a seeking bubble." Ember explain. "It's part of the spells of directions that I study. When I use the claw marks as clue, it can seek out where they are hiding right now."
"But it looks like it's getting faster, we need to catch up with it."
"I'm on it." Rainbow Dash was lucky to be a fastest flyer, as she keep her eyes on the bubble.
"I never heard of that spell before," said Twilight looking at the bubble and with Spike riding on her back, "it was amazing. Where do you learn this spell?"
"I'll tell you later," said Ember, "we have things to do."
"I hear you," Applejack agreed, "come on every pony we have some varmint to track down."
As they went across the courtyard of Canterlot, they stop in front of a cave under Neff the castle, Twilight notices that is the same caves that she and Cadence were trapped. Which made Fluttershy a bit nervous.
"Do you think that's way those monster are hiding?" ask Rarity.
"The seeking bubble had never fail," said Ember, "so this is where they might be."
"My pinkie sent tells me that they really are hiding in there." Pinkie Pie feeling twitchy.
"Well, there's no time to be standing around." suggesting Applejack.
"You mean where going…in there." Ask Fluttershy feeling her fears and looking in the crystal cave, which is dark and frightful.
Spike feels the same way, but Twilight was not afraid.
"Don't worry," said Twilight, "I've been there before with Cadence. Come on."
The ponies went in the caves carefully, letting Twilight lead the way. Ember was not nervous as Fluttershy or Spike, yet for her being so new to the group. She was a brave pony, as she follow the other ponies.
Inside the crystal cave, the goblin cats were now hiding with the book they have stoning from the Archive.
"When we gonna open the book?" ask Whiskers.
"Not yet," said Azrael, "we need to take it to our mistress, she can understand its secret."
"But why do we have to hide here?" wonder Black claw.
"We can't let those ponies find us. Until we get back to our mistress, we'll begin the next thing."
As soon as the ponies venture in cave, looking for the thieves. It was quiet for a few moments until they could hear voices.
"What was that?" whispers Fluttershy with a fright.
"I don't know," said Twilight, "but I think it could be them."
"Let's find out." Rainbow Dash flew ahead, the other ponies follow.
They hide behind a rock and they have found what they looking for. But the ponies and Spike were getting spook for a moment.
"What are those hideous things?" Rarity complained quietly.
The ponies have never seen the goblin cats before. But Ember heard about them and remember what they are.
"They must be…Goblin cats." She said and explained, "They're evil cat creature that live in the mountains. But they were supposed to be extinct, since they cost so many terror and trouble."
"It looks like there taking." Said Applejack.
And she was right, so the ponies listen.
"But Azrael," Black Claw complied, "we don't know if that thing exist. Even those goody princess couldn't find it."
"Oh, but it does Black Claw," said Azrael, "and this book can tell us its secret powers and as our mistress said, once we find, she'll revise its powers and Equestia will be ours"
"But how do we get back to our mistress?" ask Whiskers.
"Be peasant Whiskers, we use this to create a portal to get back to the lair" Azrael continued getting a purple crystal, "and then we'll hunt the golden heart."
"What's the golden heart?" Fluttershy wonder.
"I don't know," said Twilight again, "I never heard of it, but we need to stop them from taking that book."
As Azrael is about to use the crystal to create a portal, Rainbow dash could not wait, when she zoom in.
"Hold it right there you creeps!" she yelled.
The goblin cats caught her attention.
"I thought you said they won't find us in here." Black claw turn to Azrael.
Then Twilight came in, "There's nowhere else to run!" Then Applejack, Pinkie Pie, Rarity, Spike and Ember came before her, Fluttershy flew in slowly.
"Princess Twilight?!" whaled Azrael known Twilight.
"That's right, now give us back that book!"
"Sorry princess, finders' keepers. But if you want the book. Come and get it."
The goblin cats quickly leap away and the gang must catch them.
"Be careful," warn Ember, "the goblin cats are very fast and very cunning!"
"Don't worry," said Rainbow dash, "I won't lose them."
As she zoom ahead to catch up with the goblin cats. But then Black Claw jump on to a tall rock and then jump on Rainbow. He rise out he deadly claws and slashes one of Rainbow's wings, which made her crash.
"Rainbow Dash!" cried her friends.
"My…wing." Rainbow dash mutter has her wing burns with pain.
"Can catch us with a bad wing, can you?" Black Claw ask with a wicked smile.
"No evil creature hurts my friend and get away with it." Applejack said angrily and charge at the evil beast.
But Black claw had her trip over with his tail, then she was about to fell over an age, lucky to hold on to a rock.
"How dare you that to my friend!" Rarity feeling angry, as she Pinkie Pie and Twilight charge on them, with Spike on Twilight's back.
Fluttershy and Ember came after them along with Rainbow Dash with her bad wing.
The goblin cats to deal with those ponies before they make there get away.
"Keep them away," Azrael commanded to Black Claw and Whiskers, "I'll get the portal ready."
Black claw uprush on Rarity and Pinkie Pie, giving a big glare and showing his claws, which give Rarity a big fright and land on Pinkie.
Twilight had toward Azrael, but Whiskers jump in front of her and tossed some dust in her eyes. That made Twilight stop for a while and had Spike fell off.
Applejack is trying to pull herself off the age with her straight, but she was about to fall. Lucky Fluttershy mange to caught her and help her up.
"Thanks Fluttershy," said Applejack, "I would had fall without you."
"Glad to help." Said Fluttershy.
Azrael got out the crystal and create a portal.
"Oh no you don't!" cried a voice.
Ember dash towards him and blast the crystal off him, as the crystal burst it made to more portals, but Azrael know which one.
He and the two goblin were about to head in, when Ember use her magic to get hold of the book and bring it towards her.
"I got it." She cried.
Just then Azrael got his claws on it, but Ember quickly got her hoofs on it and each of them pull to get it back.
"Give me that, pony!" Hissed Azrael.
"You will not take it!" Shouted Ember, "Now let go!"
Black Claw grabs on Azrael, Whiskers grabs him and they pull. Ember need some help, when Applejack helps her pull, then Fluttershy came after her.
Twilight is trying to get the dust out of her eyes. Spike is trying to help her.
The three ponies and the goblin cats continued pulling the book on each side. They pull and pull, until the book burst in to two half and the two side fell.
As Twilight eyes are recovered she weakness a tragic site.
Ember, Applejack and Fluttershy fell in to one of the portals and then the portal vanish.
The other four ponies and Spike watch in horror. "What have you done with our friends?!" shouted Rainbow Dash.
She, Rarity and Pinkie Pie charge on the monster. But as they came, the goblin dough them, then the three ponies accidently rush into the other portal and the portal vanish.
"Rarity, Rainbow, Pinkie!" Twilight cried and notices the goblin cats with one half of the book headed to the last portal, the one Azrael made.
"Look like you've lost this round…Princess." replied Azrael wickedly, then he and the two goblin cats jumped in to the portal and then vanish.
All is now in silent for a moment, then Spike whaled. "What just happen Twilight?!"
Twilight didn't answer, as she started crying. She had failed to get the book back and she had lost her friends, even Ember.
"How could I let this happen?" she wonder.