Sans rubbed his eye sockets. Sunshine shined in through the window. Toriel has already gone off to work at the elementary, leaving him a piece of cinnamon - butterscotch pie. Ever since Frisk had gave her the idea for it, that was the only kind of pie Tori would make. A note was left by the pie : Have a good day, sweetie pie! - Toriel. Sans snickered. Nice one Tori. He looked outside the window. Papyrus was outside, chasing the butterflies. Even though Frisk had offered him her butterfly net, Papyrus always refused saying he would catch them with his hands.

Just then Sans's phone rang. When he pulled it out to see what it was, the number was glitchy, unreadable. Huh, wonder who this is. He thought. He answered the call. " Hello?" There was a bit of sobbing on the other side before an answer " Y - you have to help me!" The voice sounded exactly like Papyrus's, but Sans knew it wasn't! Papyrus was outside, trying to catch butterflies. Sans quickly looked outside again. Nothing had changed. " Who - Who is this?" He said. The person on the other side of the phone stopped for a moment, before asking, " What is your name?" Sans was confused, but answered quickly. Why would someone call him if they didn't know his name? Sounded crazy. Then the person on the other side sighed. " Thank goodness this is the right number! Now, are you alone?" Sans took a quick look around the room. "Yea, why?" The person on the other side of the phone seemed slightly relieved, before saying, "Sans! You gotta help me! Error… Error… Error took Sans!"

Sans knew in an instant what was going on. "Okay, what timeline are you from?" The person on the other side sniffled. " Underswap." Crap! Stupid Error! Why does he always have to go around messing everything. I have to do something quick! " Okay. You're the Underswap Papyrus, aren't you?" " Yes." Sans knew it. Most Papyrus's would be even more upset, but in between all the timelines, The Underswap Papyrus was the most able to handle this. Mostly because he had his own personality in that timeline. But all of them had a hint of his own , he had met the Underswap Sans before. Everyone else called him Blueberry.

" Okay, I'll be there as fast as I can." And he hung up. He couldn't believe that Error was going to mess up another timeline! And out of all of them, he had to chose Underswap. Those timelines were very rare! So Sans scribbled a note and left it in Frisk's room. Frisk was pretty much the only one who knew about the other timelines, besides Flowey and Chara of course. Error himself didn't have a timeline to call his own, and if he did he would probably blow it up. The Sans of a timeline was there to protect it, but Error…. He was just a maniac. There was nothing he loved more than destruction. In fact, Sans was sure that if Error got the chance he would crush the universe that he loved, Living out on the surface with his friends and family.

It only took a matter of seconds to get to the Underswap timeline. The Papyrus of the timeline looked up at his arrival. "Oh thank god!' He said. " Error just… Appeared! He took Sans and just ran with him!" He used.. Like these blue strings and wrapped them around his soul and they just disappeared!" Sans looked around, obviously confused. " why were you guys even in the final corridor?" Underswap Papyrus grimaced. "We ran out of spaghetti noodles and Sans begged me to go see Undyne so we could get more." Sans had almost forgotten there was this weird thing in this specific Underswap, That even though Undyne had most of Alphys's traits, one thing hadn't changed : her love for cooking. " When we got there Undyne wasn't there, so went to the lab. She wasn't there either! So we figured she had just gone to see Asgore, but when we got here he just appeared and Grabbed Sans before dragging him into the void!" The Underswap Papyrus broke into tears again. " Calm down, okay?" Sans said. "I'm sure blueberry is fine." Underswap Papyrus looked at Sans with an unreadable expression. " I've asked you not to call him Blueberry." Sans shrugged. "We have little nicknames for the Sans's of all the timeline. I get the official name because I was there first."

After that Underswap Papyrus took Sans back to his and Blueberry's house. "What are we going to do?" Papyrus asked. "Well," Sans said. "First things first. We need to get in contact with Core Frisk." Core Frisk was a Frisk who could see all timelines. They had a connections to all Frisks and Charas. "Right." Papyrus said. He was now lazily lying on the couch next to Sans. " But what do we do after that?" Sans looked around. "Well, I suppose that we'll figure it out from then. Oh, and hey, do you have any ketchup? I didn't get anything to eat." Underswap Papyrus got up and grabbed to ketchup bottles before each of them began to suck on one. Papyrus probably did because he was scared. Sans disappeared, the ketchup going with him.