Earlier

A Nightmare drone stood outside of a tall building made of dark purple crystals in the middle of a black void, the landmass that held the building was just a large chunk of a destroyed world with a flat surface. It stood with its back against the wall, just beside the door to the building. A few moments later a larger Nighmare walked up and stood on the other side of the door. This one was much more muscular and was a full three feet taller than the drone. The two were standing gaurd as a meeting was held inside the building.

"You think they'll actually go through with the plan?" The Nightmare brute asked in a deep voice.

"I don't know, we're still waiting for The Nightmare King to send one of those new generation Nightmares." The drone replied. As they looked ahead they saw what appeared to be another Nightmare drone walking towards the building, only this one was made of a much darker purple substance and its eyes glowed blue, it had pointed shoulders and what looked to be a black trench coat on. "The hell is that guy wearing?"

As the new Nightmare approached the door the two stepped in his way. "Woah there pal, what's with the getup?"

The newcomer looked up at the brute and gave an annoyed sigh. "Out of my way brute, I have business with the Nightmares inside about the plan against the Master Chief."

The drone and brute raised a brow. "Should we just let him in?" The drone asked.

"The only ones who know of the plan are the Nightmares taking part in it, let him through, have a good time stranger." The brute replied, the drone nodding and opening the door for the newcomer.

"Much obliged." The stranger thanked before walking in with the door shutting behind him. Walking down the narrow crystal hallway he came to the end where he entered what seemed like a bar of sorts, for creatures like Nightmares to come and have a drink of Apocalypse Magic, the demon equivalent to alcohol. Give Apocalypse Magic to a displaced in its unrefined form, a large red crystal, and it powers them with powerful magic but also corrupts them. Give it to a Nightmare or other creature of darkness in its refined liquid for, and it's just like a drink to them.

The stranger looked around the dark pub until he saw a flight of stairs with two drones on either side. Walking up to them he nodded, they looked to each other and let him through. As he walked up the steps he could start to hear the sound of voices. Instead of walking into the room he cast a cloaking spell and stuck to the outside of the room, listening in on the conversation.

"The Flood will begin their first assault on the vulnerable Crystal Empire where they will feed on the depressed inhabitants, the Nightmare drones and brutes will strike at Canterlot while that worthless displaced is busy fending off the Flood, the Changelings shall then commence an attack on Ponyville and secure the Elements Of Harmony for further use. We will then all meet back up on the ring orbiting Gaia and begin the second phase of our plan." A Nightmare at the front of the room stated to a table of various different kinds of Nightmares.

"What shall happen if Symbol Shattered aids the ponies with other displaced he has at his call?" One curious Nightmare asked.

"We have accounted for his arrival and have taken steps to stall him long enough for us to complete the mission."

The stranger raised a brow at this. 'They have to know he won't fall for that kind of thing, he'll know something is wrong and move on.' He thought as he continued listening.

"All of you are to meet at the ring tomorrow morning for preparations. I will be going back to the crash site to check on the Nightmare Hivemind."

"It always amazes me that a Nightmare was able to possess something like the Gravemind and still be able to keep up with the mental strain."

"Yes well that specific Nightmare was specially designed to have that amount of brain power and endurance, add that onto the Graveminds already by intellect and you've got yourself the Nightmare Hivemind." The Nightmare at the front nodded to the rest of the group. "Now go, and remember, The Nightmare King will not tolerate any failure on this mission. If you fail and survive you'd best run for your lives and hope that none of us find you. Dismissed." The group of Nightmares all disappeared one by one.

The stranger remained cloaked as he exited the building. Once he was far enough away from the building he pulled a small device out of his trench coat. "Did you get all of that Symbol?"

'I did, good work Miller, it's good to know that there are at least some good hearted Nightmares out there in the Multiverese.' Symbols voice came through the device.

"Should I head back or do you need me to be somewhere?"

'Actually I do need you to do something, there is this old temple in the tundras of Marcus' Equestria that I need checked out for a group known as The Order Of Tranquility, think you could scope it out and see if you can find anything useful?'

"Sure, I'll get going, you need to plan around their plan. Goodbye." Miller placed the device in his coat and walked through a portal to Marcus' world.

Meanwhile Symbol stood on a circular white platform in a voided space looking up at a large screen that displayed many pictures and videos of destroyed worlds and possible locations for a displacement. "Things are never peaceful are they? I can never catch a break." He suddenly felt the purple band on his wrist vibrate slightly as the blue gem glowed. "Looks like another of my displaced is in need of assistance, better make this one quick." With that he vanished from sight.

As he had disappeared a door at the opposite end of the platform opened to show a young boy with slick black hair walking in. His eyes had no irises and his pupils were reptilian slits. He sported a small dark grey tailcoat and dress pants, a small bow tie tied around his collar. "Typical, always going off when I need to talk to him, he's probably just going back to Ashleys world." The boy rolled his eyes and walked up to the large screen. "Now, let's see what my father has been up to."

Author's Notes:

Sorry for the wait folks, hope you enjoyed.

And the Nightmares were never mindless or stupid, they have smart members and aren't just one being controlling all, they have their own personalities.