This humans name, was Frisk, Frisk had fallen down Mt. Ebott, and into the underground, They were scared and confused, wondering how they survived that fall, but nonetheless, they continued on. As they went on they ran into a Flower? They ran into a talking Flower.

"Howdy!" The flower said.
Frisk waved back at it.

"I'm FLOWEY. FLOWEY the FLOWER. You must be new to the UNDERGROUND aren'tcha?" Frisk nodded their head.

"Golly! You must be so confused! Someone ought to teach you how things work around here! I guess little old me will have to do. Ready? Here we go!" Frisk was surprised  when a box with a RED heart popped up in front of them, with buttons at the bottom that read, 'FIGHT' 'ACT' 'ITEM' and 'MERCY'

"See that heart? That is your SOUL the very culmination of your being! Your SOUL starts off weak, but can grow strong if you gain a lot of LV. What's LV stand for? Why, L.O.V.E, of course! You want some L.O.V.E, don't you? Don't worry, I'll share some with you!"
Five spinning white pellets appeared around FLOWEY, Frisk jumped as the pellets appeared out of nowhere.

"Down here, LOVE is shared through... little white... 'friendliness pellets.' Are you ready? Move around! Get as many as you can!"

The spinning white pellets go towards the player's SOUL, draining the player's HP by 19. Flowey's expression changes from a friendly smile to an evil smile.

"You Idiot! In this world it kill or BE killed! Why would ANYONE pass up an opportunity like this!?"

Dozen more pellets surround Frisk

"DIE!"

Right before the spinning white pellets make contact with the player's SOUL, a fireball appears next to Flowey and knocks him away. The player is instantly healed, and a large goat-like creature slides in, they looked to have some human features, such as a patch human skin on their leg.

"What a terrible creature, torturing such a poor, innocent youth. Ah, do not be afraid, my child. I am TORIEL, caretaker of the RUINS. I pass through this place every day to see if anyone has fallen down. You are the first human to come here in a long time. Come! I will guide you through the catacombs." TORIEL held out her hand.

Frisk was scared, seeing this Human-Goat creature but saw that she meant well and took her hand, and followed TORIEL to the catacombs.