You died. Again. But, when you woke up... You were back at the beginning. You didn't reset... but something was off. Flowey seemed skittish, frightened even. He was KIND. The people you knew, you once held dear... CHANGED. The entire underground was different... Dark. Nobody seemed to recognize you, but a part of them still remained. Someone who just wanted a friend, to be looked up to, respected... And another who just wanted hope-who was tired of this game... You're left with two choices: Will you kill to survive, or will you die befriending them all over again? Authors Note: This is in the AU Underfell. I recommend looking into it, it's simply amazing to me! Long story short, the "you" mentioned there is Frisk but it was a good description for the AU I found once. This is basically, somewhere the save file got corrupted, and now everything is reversed except Frisk. Hope you enjoy! Disclaimer: I do not own Undertale.

After Frisk goes missing, Caitlin, Frisk's twin sister goes looking for her in the the last place she saw her. MT Ebott, the mountain of dark legends, she finds a necklace that belonged to Frisk on the ground. Just like Frisk, Caitlin tripped and fell into the Underground. Caitlin finds things she never knew existed.

All characters and plot belongs to Toby Fox and Temmie. Frisk has tried to reset many times to save everyone but could never get the best ending for them until a certain person literally came into their lives...The Player. Will OC finally help Frisk save everyone or will Chara and Asriel take over Undertale forever......(Potential interests: Sans, Papyrus, Asriel, and Flowey the Flower)