"Mabel, I'm going to the woods. Wanna come?"
"Aw, man! I wanted to see if Waddles could race me!"
"Okay...that's why I asked. You don't have to come."
"Yes!"
Dipper was planning another expedition into the woods while Mabel was...being Mabel. Dipper heard two people in a mountain yesterday, but never got to see them. He overheard a conversation between them.
"SANS!" one person had called. "HAVE YOU FOUND A HUMAN YET?"
"uh, no," the other person, whose name was apparently Sans, replied.
"UGH, DID YOU EVEN LOOK FOR ONE?" Dipper could tell that the voices were getting farther away.
"nope. got tired."
"FINE. I MADE MORE SPAGHETTI! IT TASTES GREAT! DO YOU KNOW WHY? BECAUSE IT WAS MADE BY I, THE GREAT PAPYRUS! NYEH HEH HEH!"
"do you make anything other than spaghetti?" By now their voices were nearly inaudible.
"NO! WHY WOULD I? SPAGHETTI IS DELICIOUS! DELICIOUS ENOUGH FOR THE GREAT PAPYRUS! NYEH HEH HEH!" Dipper had heard some more talking, but he could not comprehend what they were saying. This conversation would have been pretty normal, except one thing had bothered Dipper. Why had Papyrus asked if Sans had found a human? So he decided he would go investigate, unaware of the many things that he will encounter and learn, the people he would meet. No, not people, but monsters...
Sorry it's so short. This is my first crossover story. Should I continue this fanfic? Let me know in the reviews what you think! I know it seems a bit rushed, but just wait. I am a bit short on time. Also, spoiler alert for Undertale. I do not own anything, just the story plot.