Black Nightmare

"Hello? Is this thing on? Is anyone out there?" A voice came through the transceivers of a military outpost on Equestria's moon. "Help! I'm Star Song, the last confir-" The transmission cut temporarily. "-vior of what we are labelling Incident No. eighty-seven B! We've lost RES: Loyalty, and all officers are-" Another cut. "ead... Please, if you can ear this! Help! I need you, and whoever else on this damn ship does to!"

The message ended, the voice was indeed a soldier known as Star Song, the station crew could confirm that. What had happened to that ship? "I want that ship found! Whatever did this needs to be either slain or captured!" the station officer yelled, turning to a new recruit. "You, contact the Canterlot station, they need to know about this!" He turned to another worker, yelling at him to. "Track that contact, I want to know where it came from."

He turned back to the communicator, there was no signal to the ship anymore. "Don't worry, my daughter. I will find you," the captain proclaimed. "I will find you..."

Star Song, meanwhile on board the lost ship huffed in a fury. "Work dammit," she yelled.

The ship's AI replied emotionlessly. "System error. Cannot sustain contact."

Now Star Song was alone, in the bridge of a failing star cruiser, with whatever had torn into her crew-mates. Many had been torn limb from limb, cold, crimson blood oozing from some, others had gory hole in their chests, their intestines ripped out a strewn across the floor without care. Star's commander, a rainbow manned pegasus with a cyan coat, lay naked too. Her head torn off brutally and discarded, and her equipment torn to shreds.

Star was especially disgusted by the ooze dripping from the commanders nethers. She wanted to examine it, yet was too revolted to try.

The next job, for her,  was to find anyone else alive. A stallion would be a good start. What was happening was stressful, and a mare like her would always find a hot stallion's shaft a relaxing sensation.

But it wasn't the time to think about that, it was time to get moving, and fast.

There was a predator aboard, and she was it's prey.

That predator was a changeling, a very, very dangerous changeling, judging by what it had done to the crew, and her captain...