It was a peaceful day in Ponyville until the city-sized demon flew in from the sky and started killing thousands. Which is odd since I'm not even sure if there are a thousand ponies in Ponyville.
The Doctor had just bought some apples. He and his companion, Derpy, were making their way through the markets when, in the distance, smoke started rising. There was a lot of screaming.
"Uh-oh," the Doctor said as the smoke appeared in the distance, dropping his bag of apples.
"W-what is it Doctor?" Derpy asked.
The Doctor's eyes widened. "Miss Hooves?" he asked.
"Y-yes?"
"You have the key to the TARDIS, correct?"
"Right here," Derpy said, reaching into her pouch like pocket.
The Doctor turned to face Derpy. "Okay, Miss Hooves. I need you to listen to me, and listen good. Alright?"
Derpy nodded, her eyes spinning about.
"You are going to run to the TARDIS," the Doctor said, looking behind him as the smoke grew closer, "get inside, shut the door, press the big red button underneaath the control panel, and hide. Do you understand that?"
Derpy nodded. "B-but what about you?"
"You just need to go, Derpy, go! Don't worry about me."
Derpy nodded once again. "O-okay."
"Then run!" the Doctor said. "Fly, you fools!"
The Doctor watched as his companion galloped off. He then turned and saw the looming shadow of the ancient demon on the horizon.
"Fly, you fools?" the Doctor asked himself. "Why did I say that? It's such a garrish thing to say. Ahh, well, nevermind. Ancient creatures to challenge are ahead of me." He reached into his pocket and pulled out his trusty sonic screwdriver. "Allonsy!"
Twilight Sparkle had been eating a sandwhich with her friends. Needless to say that she didn't expect a skyscraper sized greenish-black tentacle faced demon to land not far from their picnic sight, stare directly at Twilight, and say in a deep and terrifying voice, "I'm sorry. I owe him rent."
It just wasn't Twilight's day, she guessed.
She ran with her friends across the fields, barely missing the heavy treads of the enormous creature who was crushing everything in his path.
A few ponies around them started going crazy and howling, shouting at themselves, and started kicking each other in the face. As this happened, fires were lit in rage; anarchy seemed to reign as Cthulu's assistant.
I would just like to say that, for the record, I'm not sure if Lovecraft would like the idea of Cthulu destroying Ponyville or hate it.
Just saying.
That being set aside, Twilight Sparkle and her friends continued to run, scared out of their minds, until a brown earth pony with a stylish green tie and an alien-flashlight-looking thingy ran up to them.
Before Twilight could respond, the Doctor activated his sonic screwdriver.
Now, the sonic screwdriver really didn't do anything to Cthulu besides alert him that this insignificant little pony was trying to challenge him. Which was what the Doctor wanted.
"So," he said, shouting at the top of his lungs so that Cthulu could hear him, "you think you can come and bring destruction on this world too, huh?"
"I'm sorry," Cthulu said. "I owe him rent."
"Well, not today!" the Doctor said. "There are good ponies here, and I'm going to protect them!"
Cthulu reached down with his enormous arms to strike down the Doctor, but the Doctor quickly ran in between the enormous legs of the demon. He then aimed his sonic screwdriver at the ankles of the demon.
Cuddly Hulu felt a little prick on his feet. He turned and slashed once more at the Doctor, who was now galloping as fast he could away from the enormous ruler of destruction.
On any normal day at work, Cthulu wouldn't really care about a small, insignificant thing like this. It was like a fly buzzing about. He would just go on working. But he was angry. He hadn't signed up to destroy cute little ponies. He liked a challenge that was harder to conquer, and less adorable.
Stupid Psychosis.
Twilight watched from afar as the god of chaos started to chase after a tiny little time traveling pony. And, before her eyes, things started getting even weirder.
In the fields, where Cthulu now tried to swat the Doctor like a bug, the very fabric of things started to warp. Right in front of the demon and his annoyance, a tiny black dot appeared on the material of reality, like a hole in a painting.
There were whirlwinds now, and, upon looking behind herself, Twilight realized that there was another one of these holes behind her.
A voice called out through the winds. "Come on Twilight!" The unicorn felt Rainbow Dash, her athletic friend, start pulling her away.
Realizing that something bad was about to happen, the purple unicorn started running, keeping close to Rainbow Dash. Applejack was on top of a hill a few yards away, beckoning them to get closer.
The ground started folding and bending like a carpet being pulled. Twilight tripped and felt herself getting sucked towards the black hole.
"Twilight!" Applejack called. Twilight saw her friend Fluttershy crying alongside the cowgirl pony.
Rainbow Dash turned around and, in a leap of bravery and loyalty, flew after Twilight, who was getting closer and closer to the black hole.
Twilight could hear the shouts of her friends as she reached out and grabbed Rainbow Dash's hooves.
But it was no use. Rainbow Dash, in all her strength, was pulled away from her friend. The two ponies, elements of Magic and Loyalty, went swirling into the void.
Twilight got one last glimpse and saw the demon Cthulu being sucked into the other black hole, right before the whirring sounds stopped, and everything went black.