***Prologue***
Long ago, the world of Equestria was formed by three tribes: Pegasi, Unicorns, and Earth ponies.
With their combined efforts, they were able to make a peaceful land where people could live without worrying about the concept of life and death. The buildings were built using grass and sticks from trees, and mud was used to hold it together.
The Pegasi provided the land the weather conditions to help crops grow, the Unicorns gave the Pegasi magic to create the clouds and weather conditions, and the Earth ponies supplied the crops and land to give everyone food and water needed to breathe.
One of the first leaders in Equestria was Celestia's father: King Solaris. Solaris looked a lot like his daughter, with his large wings extending over his thighs, white skin, his long stream of hair, and a orange star for his cutie mark.
He managed to lead the citizens of Equestria to an era of peace for over 500 years, and any evil that would come to ruin this peaceful time, he could easily destroy with the Elements of Harmony boosting his magical powers. He also had an assistant to help improve Unicorn magic for the future. His name was Star Swirl, a gray colored Unicorn who was known as a child prodigy from his peers in Magic Kindergarden.
However, before evil threats such as King Sombra, Queen Chrysalis, and Discord came into existence, there was one creature in the world of Equestria that would set up the future attacks on the land centuries after his passing.
After Solaris gave up the throne to his daughter: Celestia, he gave his knowledge of magic to her in order to keep balance in Equestria alive.
But despite her attempts, she was unable to learn everything her father taught her, and that caused the era of peace her father created, to collapse.
**Present Day**
It was a beautiful day in Ponyville. The birds were chirping, the sky was light blue without a cloud in sight, and the sun was high in the sky.
Twilight had just woken up a few moments ago from her tree house and was tending to her cleaning duties.
Ever since she became a Princess, Twilight Sparkle has gone through a lot of stress. From giving up the elements of Harmony back to the Tree of Harmony to save not only her mentor: Princess Celestia, but also Princess Luna. To being tasked with understanding the Tree’s treasure chest, as well as unlocking its contents.
She has spent weeks to try and understand the chest, from using various spells, to asking Zecora for help. However, Zecora has never experienced a chest like the one from the Tree of Harmony before in her life, and all the spells Twilight used didn’t do anything to help solve this problem.
As Twilight was dusting the library, she didn’t notice that Spike had woken up and was standing in front of his door.
“Good morning Twilight.” Said Spike
After hearing Spike’s voice, she got startled and fell on the floor.
“Sorry Spike, I didn’t see you there.”
“It’s okay Twilight. Are you okay?”
Twilight then let out a deep sigh.
“No Spike. No I am not. This box has caused me so much stress; it is beginning to drive me insane.”
Spike then walked over to Twilight and helped get her back on her feet.
“Twilight, Celestia told you that you can’t solve this chest by yourself. Why are you so focused on solving this problem on your own?”
“Because Spike, I don’t want to fail Celestia!”
The room was silent after that sentence, Spike was about to walk back to his room before Twilight spoke again.
“Spike, I’m sorry I yelled at you. It’s just that Celestia instructed me to solve this chest and I don’t want to fail her again.” Said Twilight
“Look Twilight, I forgive you for yelling at me. But you know that you don’t have to solve everything by yourself. You have your friends to help you through anything, they always have and they always will.”
Twilight then smiled.
“Thank you Spike. Now come on, let’s get some breakfast.”
**In Tartarus**
Tartarus looked like Equestria, but it was covered in flames and the sky had clouds covered in fire with a red color in-between. There were no houses in Tartarus, but instead there was a huge building where the bad souls would be tortured by the Prince of Tartarus: Eclipse, who looked like a male version of Princess Luna, except his flowing hair is consumed by flames, his skin is a dark red color, and his eyes are completely black with a white pupil in the middle.
After recently torturing some bad souls, Eclipse took a seat and was about to begin his break before…
“PRINCE ECLIPSE!” shouted one of the guard ponies.
Eclipse slammed his hooves on the table in front of him.
“What do you want? Can’t you see I am on break?”
“Yes your highness, but I have some urgent news.”
The guard pony gives Eclipse a paper note on his desk and walks back to the door as Eclipse begins to read the note.
He slammed his hooves on the table again and he was furious.
“HE ESCAPED!”
The guard pony quickly shut the door, and had a scared look on his face.
“Yes your highness, this man has escaped Tartarus.”
“HOW!”
“We don’t know for sure, but we think it might have something to do with the recent attacks on Equestria.”
Eclipse then walked over to the guard pony, leaving the guard terrified of what Eclipse was going to do.
“You contact Prince Solar immediately! He needs to know about this!”
Eclipse then began to walk back to his desk.
“But sir, how dangerous can this guy really be?”
“More dangerous than you can possibly imagine. Now, go at once!”
The guard immediately ran towards the Royal Castle to alert Prince Solar about the escaped prisoner of Tartarus.
**Equestria**
In the Everfree Forest, which was once labelled a place for all ponies to avoid, a dark figure appeared from one of the large trees, holding a mysterious object in his hoof.
“Soon Equestria. Soon you will all pay!”