Marcus was walking through the mountainside early in the morning like he usually does. This wasn't a normal mountain though, not that the boy would know at that point. It's called Mt. Ebott, and this particular mountain has an uncanny reputation for disappearances that have occurred on it. Where the other hikers went when they disappeared has been the biggest mystery for as long as anybody can remember. Monsters have been rumored to be living inside the mountain, waiting to take any more unwary victims.
As the 10 year old boy was walking through the mountain with both hands in the pockets of his long pants, he notices a path on his right. Curious about it, Marcus walks this path all the way leading to a great, big pit. Observing the size of this unusual pit in a state of awe, Marcus doesn't know of the shadowy figure coming up behind him. Said shadowy figure smirked as they knocked out the little boy still observing the big pit with a rock clenched in their closed hand. It wasn't much but it the force was enough to knock somebody unconscious for a little while.
Catching the human boy as he fell to the floor, the short shadow figure then carries Marcus' body in a bridal fashion while going down into the pit. At the bottom of the pit was a bed of golden yellow flowers that looked to have been recently watered and grown. Both the still conscious boy and his shady body carrier were 3 feet above the flowers when suddenly a short twister appeared from below the latter as they slowly descended to the floor. Putting the 10 year old human boy down, they then begin some kind of chant in an unknown language.
While the chant was being performed, a strange symbol shows up in an intricate seal in front of the figure. Faster and faster the chanting went as time moved on, during which Marcus' body twitches a bit sporadically. But still the shadowed figure kept on with the spell they were doing. One of the strange things that happened was that Marcus' shoes and socks burst to pieces. This of course brought a small smirk on the caster's face since he is just about finished with the spell being done on the boy.
"Golly, that didn't take long," the figure said before stepping out into the light. The figure is a little goat boy somewhere around Marcus' age. He wears a buttoned up shirt covered with a yellow green and golden yellow striped sweater, with black jeans on. The goat boy doesn't wear any kind of footwear. His name is Asriel Dreemurr, prince of the Underground Monsters, and only son of the king and queen Asgore and Toriel Dreemurr respectively. Asriel was exploring the surface when he saw the 10 year old boy wandering around the forest surrounding Mt. Ebott.
He's been very lonely ever since his adopted sibling passed away during a prank gone horribly wrong at his home. Deciding to find a friend by himself, the little prince told his parents that he'll be exploring the surface world a little bit, especially since he somehow has the power to travel between both the Underground and the surface world above. How he got was a mystery to both his parents and himself. Promising them that he'll be back before dinner, Asriel then climbed up out of the pit and searched for a friend.
"Well, let's see how suitable you'll be as a playmate shall we?" he asked the now barefoot boy that is still knocked out. While walking around the dark haired boy in an inspecting manner, the goat child one time sniffs all over his feet before letting out a cute little "baa" almost in pleasure. "Yep. You would most definitely do as a playmate buddy." The second he said this, Asriel lifts up Marcus' now sleeping body with abnormal strength. It turns out that Dreemurrs are known to be incredibly strong and very gifted in magic. Been that way for as long as anyone in the Underground can remember. Sealed away behind a barrier at the last stages of the Human-Monster War that occurred a long time ago merely kept the monsters hindered a bit.
"Don't worry buddy," the prince said to his new playmate along the way back to the castle. "When you wake up, I'll make sure that you won't remember a single thing about your old life. You'll be filled in with new ones pretty soon. After all, you're mine now. I own you." saying the last sentences in a low tone so that nobody following him would hear, Asriel makes it back to the castle and walks up to his room. When he closes the bedroom door, Marcus' fate would already be sealed.