For all intents and purposes, this fanfiction is dedicated to Toby Fox and to all those amazing people who went through the process of creating the wonderful game that is Undertale. I do not take credit for any work that they have done and write this purely out of fun and entertainment. I am relatively new to writing so I do hope you enjoy it my darlings!
After Frisk helped to free the monsters from the underground, after everyone was happy to be free, finding a place in the humans world proved difficult for some monsters. Finding places they could call home, finding sanctuary among those who inhabited the surface, they had troubles on both sides. There were those who had begun to live amongst some groups of humans in peace...but then there were the monsters who sought revenge upon the race that had trapped them for years. This...is Undertale...the Surface Saga.
...
As a red car can be seen hurtling down the motorway, Sans and Papyrus talk of the recent goings on as Frisk sleeps across the back seat.
"Hey bro... you like the humans, right?" Sans asked as he looked out across the sea, their car passing over a river as it led out to the big blue.
"What brought this on all of a sudden, Sans? If the great Papyrus didn't like humans, how would I have been able to make a friend like Frisk? They sees us for who we are." He replied in an almost nonchalant way, not taking his eyes off the road.
"Well, that is true...but if you think about it, not all the monsters who were freed from the underground by Frisk are as happy about their new life on the surface as we are." Sans replied, not looking at his brother as he found comfort in looking out the window.
"Nyes, well, we did expect some humans to be resistant...but to think it would get to the point where it would cause conflict and strife, even Undyne is hating it." Papyrus replied as he turned around a long bend, their house peeking out from behind a hill.
"And she used to be the type to bring the violence to a party. I guess you could say she was a... BONE-fied genius at it." Sans replied, making a bad bone pun.
"Nyeeeeh! Sans! Did you really have to-" He said before Sans shushed him to be quieter as Frisk stirred in their sleep from the loud noise. They remained quiet until they got home when they put Frisk to bed, their face covered with an expression of exhaustion as they sleep soundly.
Sans thought to himself.
Welp...even though they're old enough to take care of themself now, they haven't moved away or gotten tired of us. That little trooper's had a such a huge responsibility since we came into their world...and yet, they never let it show.
Coming downstairs, Sans and Papayrus joined Undyne, Alphys and Toriel around the television as they watched the storming local news story.
"As you can see here, a brawl broke out in the late hours of last night. It's uncertain but it is being theorised that this many have been the work of two monsters. Many people were injured and several buildings destroyed but no casualties have been reported so far. This has also been the latest incident as others have previously been reported in various locations, however, this has been the closest to the reported location of where the monsters had first been seen emerging 10 years ago."
Everyone looked to Undyne.
"I don't know why you're all looking at me, I wouldn't go around looking for a fight...but you know, it has been a while since I had a good brawl with some knuckleheads." She said with a wide grin as she punched her fist against her palm.
"W-w-well, n-no one we know i-is strong enough t-to do th-this kind of d-damage, r-right?" Alphys said, nervous as always.
"After 8 years, you'd think that things would have settled down by now. It saddens me to see the world at odds this way." Toriel said, a look on her face that looked like she was about to burst out in tears.
"Hey now, don't go soft on us, Toriel. Everything will be just fine. For I, the great Papyrus, shall help to resolve this matter." Papyrus replied, chest puffed out with a finger in the air.
Sans saw his chance for a pun "Welp, that's the end for us. Guess we're BONE-d."
"SANS!"
Everyone looked to the TV as the reporter continued.
"Furthermore, this just in. An injured girl from this scene has supposedly been kidnapped from hospital. A broken window is all the police have to go on as no one was seen entering at the designated time of the incident but from the angles of the broken glass, it can be assumed that the window was broken from the inside, with the medical instruments still running. Though her age and name is unconfirmed, her approximated age was about 8 years old."
"Wha-" Sans reacted in surprise.
"Th-that's no k-kidnapping." Alphys devised, looking closer at the screen as it showed the hospital window.
"That's one strong kid." Undyne looked on in surprise. Everyone suddenly looked to the stairs. Their talking had woken Frisk.
"Oh dear, I'm sorry we woke you, Frisk." Toriel commented as she gave them a hug, her monstrous build still towering over them even though they were sixteen now but they didn't mind the hugs.
"Hey there kiddo, you were soundo when we got back. You sleep so well, you can do it with your eyes closed." Sans said giving the teen a high five as Frisk chuckled at his pun.
"Really Sans?" Papyrus complained, looking at him with disappointment.
"Old habits die hard bro." He replied nonchalantly as he shrugged.
Frisk sat down as they watched the TV as it showed the image of the 'brawl scene' and the window of the hospital. Gasping in surprise, they pointed to the chair in the hospital room. As everyone looked closer, they saw a small amount of dust on the edge of it...monster dust.
"Just what is that kid?" Undyne asked, on edge and uneasy at the development.
"Only one way to find out." Frisk said, remaining quiet until it was the right time for them to speak up.
"Not right now, my dear. It's the middle of the night. That goes for the rest of you too. We've all stayed up long enough. Let's try to get some sleep. I have a feeling tomorrow will be a long day." Toriel said, clapping her paw-like hands and shooing everyone off to bed.
"I'll be up a while more, Tori..." Sans replied, flopping on the couch.
"...and I just woke up so it'll be a while before I sleep again, mom." Frisk finished as they sat beside Sans. Giving them both an understanding but worried look, she went upstairs to bed, leaving the two of them alone.
"So, I know something's on your mind kid." He said, noticing the frown on Frisk's face.
"It's not normal." They said almost as soon as Sans had finished talking.
"Kid, make like a dog and find 'sense'. Spell it out for papa bones." Sans said, putting an arm around Frisk in comfort.
"Even Chara didn't have that much strength. Whatever that girl is, she isn't human." Frisk said, tears welling up in their eyes.
Heh. They're still the same kid I met in Snowdin 8 years ago.
"I know, kiddo. I know. But kid, I don't see why this is bothering you so much. They didn't even show her face so we have no idea where to start looking." Sans replied, not exactly sure what to say. Even after all those years, it was still difficult to deal with some emotional situations.
"You always know what I am thinking…Puncle. Heh, thanks." Frisk said, giving Sans a hug as his comparatively huge hand wiped away their tears. They continued "I just want for humans and monsters to live together on the surface. In peace."
"If it's information you're looking for darling, I believe I can help you there." Came a familiar, metallic voice from behind them. Looking up at the back of the couch, they see Mettaton posing fabulously as if he were at a photo shoot for one of his musical tours.
"You can?" Frisk asked, sniffing a little as Mettaton handed them a tissue.
"Of course darling. Anything for my fabulous little angel. You don't think I get around just for music tours, do you? I have many fans darling, I could ask any one of them. Hell, I could ask them all. I'll be sure to ask my fans if they know anything on my official website. The internet is so useful up here. Well...chow darlings, I'm going to recharge for the night." And with a ruffle of Frisk's hair, Mettaton retired to his room.
"Welp, guess that sorts that out. You ready to sleep a little more, baby bones?" Sans asked as he helped Frisk off the enormous couch. Being built for monsters, Frisk seemed to almost be lost in its huge cushions.
Frisk smiled gently, giggling a little.
"Dad, I'm like 16, do you have to?"
"Always kiddo."
A/N Italics are for either character thoughts or for narration.