My eyes fluttered open, the only thing that was in my field of view was a giant hole with light beaming through it. I quickly picked myself of the ground, terrified at my current surroundings. A million questions swarmed my mind. 'Where am I? How did I get here? Am I dead? Am I dreaming?' I pinched myself to make sure if I was dreaming, but I still remained awake. I couldn't see too well in this place, but I could make out a door on the opposite side from me. I hesitantly started walking towards it. I looked around cautiously, making sure that I was safe.

"H-hello? Anyone?" I said shakily, my whole body seeming to tremble.

"Is someone there?" I heard a woman's voice say from the door. I froze in place, the voice sounding slightly familiar. Suddenly, Toriel appeared in the doorway, a shocked expression on her face.

"Oh dear, another human? That has been the second one that has fallen here." She said. Wait, human? Does she not remember me?

"W-Where are we?" I asked her, and she smiled at me.

"You are in the underground, my child. I am Toriel." She explained. The UNDERGROUND? How am I here?

"Do you know who I am?" I asked her, hoping that her answer would be yes. She shook her head, and I nearly passed out. It suddenly clicked in my mind. Sans had told me about alternate timelines and Frisk's ability to reset the timeline. But that didn't explain how I'm here.

"Child, are you alright? You seem lost in thought." Toriel asked me, seeming genuinely worried. I snapped out of my daze, coming back to reality. I have to find Sans, he has to know what's going on.

"Sorry for being rude, but I need to leave I have to go home." I told her, and she looked saddened as those words left my lips.

"I was afraid you would say that. If that is what you wish, I will show you the way out." Toriel told me, which made me sigh in relief. She motioned me to follow her. We trekked through various rooms filled with puzzles, Toriel helping me solve them along the way. One thing that I noticed that there was grey dust piles in some of the rooms, which made Toriel seem to look totally distraught.

"Um, what happened? Toriel?" I asked her, and she looked at me worriedly.

"Cmon, child. We must hurry!" She grabbed my hand and practically dragged me off towards where I presumed was the exit.

"What's wrong?" I asked her, trying not to trip and face plant into the ground.

"I left the other child alone at my home, she was sleeping when I left. I think she killed all those poor monsters back there! She might have went through the door to the rest of the underground!" Toriel explained, which completely shocked me. Frisk killed those monsters? That has to be a lie, she couldn't do that, I know it. We ran until we reached what seemed to be her home, which was made out of purple bricks. We entered the home, which had a massive staircase that seemed to lead down into some sort of basement. Toriel ran down the stairs, her purple dress flowing behind her. I ran after her, running so fast that I almost tripped down the stairs. I saw her at the turn of the corridor, looking straight ahead in fear. When I reached where Toriel was standing, I followed to where her gaze was. A door was left wide open, revealing a snowy forest with a bitter cold wind blowing through the doorway.

"Oh no, she's gone! She's out there! Oh dear, oh dear! My child, you have to stop her!" Toriel grabbed my shoulders, forcing me to look at her.

"Wha-? Me? How?" I stuttered, not sure if I could handle stopping a girl who killed about a dozen monsters, and who knows how many more now.

"I know you can, my child. You are our only hope! Please hurry!" Toriel cried, tears rolling down her face. I nodded and darted out through the doorway, ignoring the icy wind battering against my skin. I had to find Sans, he has to know! He just has to! I kept running, snow clinging to my shoes, making them feel numb. I noticed more piles of dust on the side of the path I was running on, which only made me run faster. I wasn't watching where I was going, and stepped in a pile of dust, the grey substance coating my left sneaker. If I ate anything, I would've puked it up right now. I started dry heaving, trying not to look at my sneaker. I knew I had to keep moving, I couldn't let anything happen. I kept running, despite my lungs burning from the exercise. I ran over a wooden bridge with some bars over it, seeing what looked to be a sentry station...AND SANS! I ran as fast as I could, the station getting closer to me by the second. As I reached the station, I noticed that Sans was sleeping. I went up to the sleeping skeleton and shook him awake.

"Sans! Sans, wake up man!" I yelled at him, which made him open his eyes groggily. When he realized that it was me, his eyes widened in disbelief.

"St-Steven?" He stuttered. Oh thank god, he remembers me. I pulled him into an embrace, and he gladly wrapped his arms around me as well. "Oh god, I thought I'd never see you again. How are you here?"

"I'll explain later, we have to stop Frisk! She's killing everyone!" I said anxiously, wanting to get moving.

"Wait, what! I left the kid with Papyrus to do his puzzles!" Sans put his hands on his head in distress.

"Cmon! We have to find her!" I yelled, almost in tears. Sans held out his hand, which I took quickly. I felt my body pop out of existence for a second before reappearing at what looked to be a shiny metal floor. Sans groaned and teleported us to another puzzle, which was empty as well. Finally, Sans teleported us to a semi-large wooden house which was located in a small town.

"You check if they're in there, I'll check the rest of the town!" Sans told me and I nodded. I burst through the front door of the house, looking around frantically.

"Papyrus!" I yelled out, but no answer came. I looked into the kitchen, only to find it empty except a lone plate of spaghetti on the table. I sighed and darted up the stairs, flinging the first door open wide open, revealing Papyrus's room. It seemed similar to his room on the surface, the red car bed, the action figures, the computer, all the same. I shook the memory of the surface, knowing that timeline was gone now. I ran out of Papyrus's room, heading towards the other room upstairs, which I presumed was Sans'. I turned the door handle, but it was locked. I pounded on the door just to make sure.

"Papyrus!" I yelled through the door, but silence was the answer I got. I rushed down the stairs and ran towards the door. I tripped and slid on my knees, getting rug burn on both of them. Ignoring the burning sensation. I ran back out into the cold, the air slightly soothing my burning knees. Sans appeared in front of me, looking exhausted and sweating profusely.

"I...didn't...find him...anywhere!" Sans tried to catch his breath, probably from all of the frequent teleporting. I looked behind him, and I could make out a tall silhouette in the fog. My eyes widened in horror. Sans looked at me with a confused expression. "Steven? What's-" I didn't let him finish his sentence. I started sprinting into the fog, trying to reach the silhouette in time. I got closer and closer, I could definitely tell that it was Papyrus. Even closer, I saw that Frisk was in front of him. I got close enough to them to see that Papyrus had his arms outstretched, offering the smaller child mercy. What he'd fail to notice was the sharp, dust covered knife behind her back. I knew what her plan was. Frisk lunged at Papyrus, the blade coming for him...

...but it didn't hit him.

...

~woo! Sequel! Anyway, this was the idea I had for a sequel to my previous story. I think it's a good idea, but I want to hear what you guys think. As always, feedback is appreciated. Thanks!