At the gates of Castle Greyskull:
"Skeletor, cease your evil this instant! You'll never have the power of Greyskull!"
"We'll see about that, He-Man! Myahh! Ready the spell, Evil-Lyn!"
The crystal staff that Evil-Lyn was holding began to glow as she started chanting. Suddenly, there was a flash as the staff burst open, unleashing a ball of light.
"Let's see you stop me from another world, He-Man!" Skeletor cawed. He rushed toward He-Man in an attempt to push him into the light.
"Not so fast, Skeletor!" shouted He-Man, grabbing Skeletor by the wrist.
"Let go of me, you buffoon!"
At that moment, the ground rumbled, causing He-Man to lose his balance. He fell into the ball of light, taking Skeletor with him.
"You fool, you've ruined everything!" screamed Skeletor as they flew through the dimensional vortex. Suddenly, the world went black.
"Ugh, my aching head," moaned He-Man as he woke up, "Where's Skeletor? And where am I? I better assume my civilian form and take a look around."
As he walked across the grassy plains, looking for any sign of civilization, He-Man, now changed back into Prince Adam, thought back to what Skeletor had said. Could this really be another world? He continued walking for a while until he saw a herd of horses. But these horses were far from ordinary. They were bright pastel colors and had strange pictures on their rumps. He approached the herd, hoping to find a rancher. As he got closer, he heard a voice.
"What is that?" it said. He-Man looked around but he could neither find the source of the voice nor what it was referring to.
"I am Adam, prince of Eternia-" he started before he was interrupted by a clearly female voice saying, "Whoa, it can talk!" He looked around again, bewildered. The voice had clearly come from the direction of the horses, but there was no one there.
"What do you think it is?" said a different voice. All the horses(Or perhaps they were ponies) were staring at him at this point. Then he saw it. One of the ponies talked.
"It's kinda gross looking," it said.
Needless to say, his mind was thoroughly blown. A talking horse? He had only seen that once before, but that was his sister's horse, which could talk only because it was possessed by a demon. When he took a closer look at the ponies, he saw that some had horns and some even had wings.
"My name's Pinkie Pie," said the pink one, whose parents clearly put little thought into names, "You said your name was Adam?"
He was stunned for a bit, but he realized this was another world, one with talking horses. He could handle that.
"Yes, my name is Adam. I come from another world, flung here by an evil sorceress."
"Well, let's all do introductions," said Pinkie Pie, "I'm the overactive one. And more importantly, I'm pink!"
The purple one spoke up next, "I'm Twilight Sparkle. I read books and can do magic, I think."
"I'm Applejack," the one in the hat said, "I sure do love apples!"
The white one with the purple mane spoke up next, "I'm Rarity. That's all there is to know about me."
The blue one smiled and said, "The name's Rainbow Dash. I'm brash and can fly around."
The last pony started to speak up, "I'm-" was all it managed before He-Man interrupted.
"I'll just call you the yellow one," he said, "and I'm sure your personality is boring. Anyway, it's nice to meet you all, I suppose, but I'm here for a reason. An evil wizard named Skeletor was sent here with me. To have any chance of getting home, and to prevent him from destroying this bountiful land, I have to find him."
"We'll help you look for him!" said Pinkie, "Two of us can fly and the rest of us can search the ground."
"Gee, that would be swell," said He-Man, "Skeletor is a yellow skeleton in a blue robe, he shouldn't be too hard to find in this world of non-humanoid beings. I should warn you all that he's very dangerous, do not try to confront him without me."
They split into 3 groups. Rainbow Dash and The Yellow One took to the skies, Applejack and Rarity went west, and He-Man, Pinkie Pie, and Twilight Sparkle went east. Their quest had begun, but evil would soon rear its ugly head.