Something felt off but you just don't what it is. You woke up this morning and went to wake up your brother Sans since he's lazy and a heavy sleeper. But when you opened the door...he was gone? Weird Sans never wakes up early. He doesn't seem to be in the house so seems you had to find him. You already planned new puzzles in case a human ever shows up. But things got weirder. When you walked out...Snowdin seemed empty...there was dust everywhere, Monsters turn to dust when killed. You were worried for your brother so you started looking and finally found him. He seemed a little different.

Sans: "Papyrus...please leave. Get far away from me and stay out of my way. You don't need to know about what I'm doing. But please. I don't want to hurt you but...if you try to stop me then I will. This has to be done for the better."