When Jay,Kai,Cole,Zane, And Lloyd decide to try and climb Mt.Ebott, they end up "falling" into a race to save the monsters that live there. Encountering new friends and enemies along the way, will they be able to set monsterkind free? Or will they be trapped down there forever? (WARNING: PACIFIST RUN SPOILERS AHEAD)

This story contains Sans x Frisk, so if you don't like that pairing don't read. Or do, who am I to tell you what to do? After Frisks resets, she finds herself in the Underfell universe, but what kind of things will await her there? I do not own anything of this story. Enjoy !

Welcome to underfell! An au, where everyone is evil except frisk, flowey, and chara!