After the defeat of Thrack the Elements of Harmony were returned to their resting place in Canterlot, with all the Princesses and their Shadows in attendance. It was painfully clear that Princess Darkstar didn't want to even be there, but thanks to her sister she had to make an appearance. Nightmare Moon had created a school for the two sides to get to know each other and live in harmony, though Darkstar had no need for such foolish notions.
In the time of her return she had realized that nearly every Shadow had fallen to liking their Light sides, making them significantly weaker than her. The only pony who seemed at ease around Darkstar was Atar, her loyal soldier and dedicated follower, though he still carried the enchanted lance of his. She spotted Reginald walking next to Celestia and knew that she would never be able to trust the stallion ever again.
The throne room was packed full of ponies and their Shadows, including Discord and his counterpart Order. Despite there being too many ponies in the room Celestia still sat on her throne with her sister next to her. Darkstar shook her head and sat near Nightmare, Shadence, and the rest of the Shadows, including the Shadow Elements. Darkstar wanted to summon her scythe and rend the souls of both the Light and Shadows, but Atar was the sole reason she didn't do that.
"As you know Princess Darkstar," Princess Luna said, "Your sister and I have set up a school in a third realm called the School of Shadows. The main purpose was to prepare for the third coming of the demon Thrack, but now that she is dead at last we are going to teach normal classes. You are going to be part of the staff like the rest of us Princesses. None of us will be placed above the rest."
"Fine," Darkstar said, not really caring at all, "What class did you have in mind for me?"
"The True Essence of Darkness," Luna answered, surprising the Shadow, "Your class will be about teaching those of the Light about the true darkness of the Shadows. Though I must ask that you refrain from harming the students."
"Fine," Darkstar replied, getting up and turning for the door, "If you need me I will be in Shadowlot, preparing for when school starts again."
Darkstar didn't care about the School of Shadows, she cared about crushing the Light once and for all. Atar knew that she was up to something, but considering that Darkstar was a master of strategy and that whatever it was wouldn't be happening for a long time. Besides, he had his power back and he knew Darkstar would use it somehow. The question was when would she act and how hard would it be.
Atar sighed and grinned slightly; he may have bested Thrack by trickery, but now he had to best Reginald. He was content to wait until Darkstar was ready to do that.