As you're wandering throughout the forests of Snowdin, you can't seem to find anything but snow. Or... Is it dust? You're not certain. You keep finding traces of black goo around certain areas of Snowdin. Where could all of this be coming from...? You hear a twig snap behind you.

"Well, well..." You hear a familiar voice behind you, as the voice begins to chuckle. "What a catch we've got here." "Heya, the name's Sans. Sans the Skeleton. But... You already knew that, hm?" You stare at the goopy-eyed Sans with a look of slight fear and confusion. "Oh, is something wrong? Not the me you were expecting this timeline, huh?" "Don't be so afraid... I'm feeling generous at the moment. I won't attempt to end your life just yet, kid." "I may seem soulless, but I still have a soul." The red target-like shape on Sans' chest glows a bright red color. "Now just move along otherwise I'll think twice about leaving you alone."