I bet you're wondering out of all the ponies to join Twilight on this adventure why is it Princess Cadence. I'm not sure why anybody would think that but I thought it would be a good idea since I believe that they have the greatest relationship ever. Anyway welcome to the first chapter and enjoy.

Twilight was searching through her books to find something that would help her with her studies.

"So which book are we looking for this time?" Spike asked.

"I don't know. Let's just hope that the book I find is good enough for the next part of my studies." Twilight said still searching through books.

They kept on searching until Spike found something in the back of one of the shelves. He found a switch for something in the shape of a paintbrush. He didn't know what to do so he pushed the switch and then they both heard a loud noise.

"What did you do?" Twilight said all concerned about that noise as if something bad might happen.

"I don't know. All I did was find a mysterious switch, activated it, and then…" He was about to continue his sentence until a part of the wall right next to Twilight's bed opened. "And now that happened."

Twilight looked to see what was in that mysterious hatch in the wall. When she looked she found a mysterious book. She pulled it out, wiped the dust off of it, and examined it.

"What kind of book is it?" Spike said hoping that she would know what it is.

"Never seen anything like it." She opened it up and saw that every page wasn't familiar to any pony.

"How do we know what this is?" Spike asked. They just stayed there looking at the book until Spike thought of something. "Wait a second why don't we go to the Crystal Empire." Twilight looked at him in confusion. "No wait hear me out. You know that there are many books there that aren't in PonyVille. So maybe we might find out what this book is if we find someone there that knows about it."

Twilight's face went from confused to excited. "Spike you're a genius."

"Alright then let's go." Spike was about to head out with her until she stopped him.

"Sorry Spike but I need you to stay here and keep searching for the book that will help me with my studies."

Spike really wanted to go but he also wanted to help Twilight with her studies. "Alright I'll stay. Good luck." And with that Twilight headed for The Crystal Empire.

The Crystal Empire.

Twilight wandered around wondering who would help her find info about the mysterious book. She kept on thinking of somepony to help her, until she thought of the one pony that she could always rely on for help. Princess Cadence. She made it to the castle where her sister Cadence is at. She entered the throne to see her sister sitting on the throne ruling over the Crystal Empire.

"Cadence." Twilight said in a cheerful mood.

Cadence looked at her and once she did she was full of joy. They both walked up to each other and did their special song and dance.

"Sunshine, Sunshine, Ladybugs awake. Clap your hooves and do a little shake." After that they shared a cheerful laugh.

"It's always so great to see you sis." Cadence said.

"And it's always great to see you too sis."

"Is there a reason for you coming?"

"Well actually yes." Twilight showed her the book. "Do you know anything about this book?"

Cadence examined the book, but even she didn't know about it. "I've never seen anything like it in my life."

"Darn, that's too bad." Twilight opened the book again and showed her the mysterious things in there.

Just like that there was nothing. Nothing about the ponies or anything, it was all unfamiliar to them at all. Twilight was bout to close it, but then the book started shaking on its own.

"Are books suppose to do that?" Cadence asked.

"I've never seen a book do that."

They were wondering why it was like this, but then some sort of creature came out of the book.

"What the heck is that?" Cadence asked.

The creature grabbed Cadence and took her inside the book.

"CADENCE." Twilight screamed, but before she could do any about it the creature grabbed Twilight and took her inside the book too.

Later on in another world.

Inside of a castle of a sorcerer lies another book identical to the one that Twilight had, and just like Twilight's book a creature from the book came out and reached for one of the bedrooms. The bedroom it went through was the bedroom of the sorcerer's apprentice. Mickey Mouse. The creature was standing right above of Mickey while he was sleeping and when Mickey woke up he saw the creature. He was scared out of his mind, but before he could do anything about it the creature took him and dragged him inside the book. Mickey tried to escape the creatures grasp, but the creature dragged him yet again, the only thing that he grabbed was a magic brush before he was dragged into the book.