"Heh... Of all the people to betray us, I never thought one of them would be you..."
"Alright, it's decided then," Papyrus exclaimed while releasing a contained breath. "You two take the plans for now then." Undyne smirked and nodded, looking to Napstablook beside her as their eyes lit up.
"Where those papers are going, no one will ever get to them," they replied confidently.
"I'm trusting you two." As Undyne and Napstablook headed out the front door, one of the two upstairs began to creak. "Yes Sans, you can come downstairs now." the loud thumps that followed echoed in the near empty house as the skeleton ran down and hugged his brother.
"Yay yay yay!" Sans cheered, "We can finally hang out!" His eyes were filled with excitement like a child on Christmas morning, which prompted a soft laugh from Papyrus.
"Yeah, I'll take a break today, and I know exactly where we should go. But first... We have a house guest, and I'd like you to meet him before we leave." A tall, slender man walked out from the kitchen. He wore a black suit with an apricot colored turtleneck poking out of the top. Two noticeable cracks dug deep into his skull. One traced along his right eye up to the top of his head, and the other ran from his left eye to his mouth. "This is Doctor Gaster."
Sans blinked up at the man who he thought had to be at least twice his height. He gave Gaster a friendly smile before taking hold of Papyrus's hand and closing his eyes. Within seconds they were standing in a bright, grassy field that had no visible ending. Sans's smile grew even brighter at the sight, as he hadn't been outside their snowy hometown in Canada for a long time. He sat down in the green waves that caused him to seemingly blend in, pulling his brother with him before settling on his back.
"This place is really pretty brother," Sans commented with a contented sigh.
"Yeah, I'm glad. It wasn't long ago when there used to be a town here. The people vanished along with the buildings, leaving plants to grow in their places. No one really knows what happened to them all..."
Sans's expression was scrawled with excitement as ideas filled his mind. "Maybe they got to the Underground somehow? How cool would that be?!" Papyrus chuckled lightly and laid back.
"Still hoping to meet a human, huh?" Sans nodded slightly, and Papyrus shifted his arms behind his head as he admired the clear blue skies. "Me too bro, me too..."