The cavern walls had a dark blue glowing tinge to them and tiny crystals where embedded inside and both Savannah and Frisk walked through the caverns, listening to the running water around the room.

"Isn't this place amazing?" Frisk asked "they've got crystals and diamonds in the walls and ceilings." Savannah nodded in agreement just as a strange creature appeared in front of the two girls, causing them both to yelped and jump back.

"Hi there, what's a couple of cutie pies like yourselves doing out here?" he resembled some kind of horse complete with muscles and a mermaid's tail "the names Aaron by the way." He gave them both a wink and Savannah gave him a disapproving look whilst Frisk turned to the older girl with a confused expression, asking why this weird seahorse creature was winking at them.

"Because he's a creep by the looks of it" Savannah whispered, taking the younger girl's hand so they could continue on forward.

"Leaving so soon?" Aaron questioned, raising an eyebrow as he smirked at the two young girls "why not stay and hang around for a while, the water's fine." He began to flex his muscles and Savannah could only give him a look of disapprovement before pulling Frisk away from this weird seahorse creature and heading for the exit that lead into the next area.

"Are you sure you don't want to stay for a while?" he asked, giving them another wink.

"No thanks, we're kind of busy at the moment" Savannah replied before she and Frisk headed out of the room and into the next one which was filled with echo flowers "jeez, that guy was one big creep." As the pair walked through the room, frisk was listening to the echo Flowers repeating the last conversation that was heard in that room and she turned to Savannah with a sad expression.

"They seem sad, the people who were here before" Frisk told Savannah "they said that they wish they could see the stars on the outside world. I think they're pretending that the diamonds in the ceilings are stars."

"I agree" Savannah replied "the monsters must have been trapped down here for a very long time and they're missing the real stars from the outside world so they must have stuck diamonds in the ceilings to pretend that they are stars."

"Do you think they'll ever go back up to the surface?" Frisk questioned "will we ever get back up to the surface?"

"I'm sure we will" Savannah reassured her "we just need to find the barrier so that we can go back."

"Do you think we'll be able to get through?" the younger girl asked "maybe we should take all the monsters to the barrier and bring them with us to our world." The girls headed out of the cavern and out onto a long board walk where it was pretty dark with their shadows illuminating along the wooden board walk giving the area a rather beautiful yet eerie atmosphere.

"This place is giving me the creeps" Frisk whispered.

"Me too" Savannah agreed as Frisk grabbed her arm, clinging to it "I've got this weird feeling that some one is watching us." Suddenly, something huge and blue shot out in front of them stopping the girls in their tracks and they saw that it was a huge blue spear.

"Savannah" Frisk whimpered, clinging tightly to her older sister's arm "what happened?" Savannah looked over to the side and there, across from the boardwalk, dressed in full body armour was Undyne, holding another large blue spear, ready to strike.

"Run" Savannah yelled, grabbing Frisk's hand and pulling her away, the spear nearly missing the girls by an inch but Undyne wasn't willing to give up and soon more spears where whizzing through the air as both Savannah and Frisk continued running.

"Why is she throwing them blue arrow things at us?" Frisk asked "I don't like it."

"I think she's trying to take our souls" Savannah replied as she tried to catch her breath and ran at the same time "we've got to keep running, we can't let her take our souls." As they continued to run, Frisk looked over her shoulder and saw that Undyne was pursuing them, throwing her spears at them both.

"She's chasing us" the six year old girl implied in a scared voice and taking note of this, Savannah began to run faster, pulling Frisk along with her as Undyne's attacks became more extreme.

"Stop running you pair of brats" she yelled, throwing at least five blue spears at once but Savannah and Frisk continued to run until they came to a patch of long grass and they both practicly dived into it before lying on the ground, curling up.

"She won't find us in here will she?" Frisk whispered but Savannah quickly threw her hand over the younger one's mouth as the sound of clanking metal slowly approached them both and then stopped. Undyne was standing right behind them and they kept really still and quiet, hoping that she wouldn't see them on the ground in front of her, trying to hide and the warrior raised her arm in the air, bringing it down and grabbed something but it was neither Savannah or Frisk, instead, it was MK and he had a huge grin on his face.

"H-hi Undyne" the little armless creature stammered, his face beaming and with an annoyed grunt, Undyne put him back down on the ground and then walked off in the other direction and after making sure she was gone, Savannah and Frisk slowly got to their feet and walked out the tall grass.

"Phew, that was a close one" Savannah pointed out just as MK joined them, still thrilled that he had just been grabbed by his idol.

"Oh my god, did you guys just see that?" he asked, practically bouncing up and down on the spot "Undyne just, touched me, holy moly, I ain't never washing my face again. Come on, let's go and watch her beat up some bad guys." He ran ahead, falling over in the process as both Savannah and Frisk looked at each other with confused expressions.

"He's odd" implied Frisk.

"Tell me about it" Savannah agreed "I can't believe he idolises the person who just tried to kill us." Taking Frisk's hand, Savannah and the younger girl headed into the next area where they bumped into Sans and he was standing by a telescope.

"Well, fancy meeting you two here" he mused as the two girls approached him.

"What are you doing all the way out here?" Savannah asked as Frisk began inspecting the telescope.

"I'm starting a new business" Sans implied "the telescope business, I'm gonna charge folk 1000 gold to use it but seeing as you're both my buddies, I'll let you use it for free."

"I want to try it" Frisk said eagerly.

"Knock yourself out kiddo" Sans replied and with a huge smile, Frisk peered through the telescope and her smile quickly changed to a look of confusion.

"Hey, I can't see anything, all I can see is red" she stated as she turned around, revealing a huge red circle around her eye, causing both Sans and Savannah to burst into hysterical laughter causing Frisk to give them a look of suspicion "hey, what's so funny?"

"Come with me" Savannah said, still giggling as she took Frisk's hand and lead her over to a nearby pool and when she looked at her reflection, Frisk saw the red circle around her eye.

"Hey" she said, turning around to glare playfully at Sans "you tricked me you poo poo head." Chuckling, Sans walked over to the little girl and ruffled her hair as she scowled at him.

"That was my prank telescope, I've always wanted to try it out" he replied "don't worry, that mark won't stay there forever" he took out a handkerchief and wiped the mark from her eye "there, it's gone now." Frisk looked at her reflection in the pool again and was satisfied that the mark had now gone.

"I would look dumb if it was there forever and ever" she stated "thank you for wiping it off."

"Does this mean you forgive me?" Sans asked, grinning widely.

"I think she does" Savannah implied before turning her attention to her sister "do you forgive him Frisk?"

"Yeah, okay" Frisk replied with a smile, showing all her little teeth "I forgive you Dunkle Sans."

"Aww thanks kid, now do I get a hug?" Sans asked and still smiling, Frisk walked over to him and hugged him "thanks kiddo."

"You're welcome and I wasn't really cross with you, I was just pretending" the child admitted as Sans pretended to look shocked.

"Really?" he asked, pretending to be surprised as the six year old giggled "I would never have guessed that" he ruffled her hair "so anyway, are you two heading on your way then?"

"Yeah, need to get to the barrier so we can go back to our world" replied Savannah.

"Wanna come with us?" Frisk asked "you can make us laugh because you're silly, silly Sans."

"Oh jeez I'd really like to kid" Sans replied as a look of disappointment appeared on Frisk's face "but I'd better be heading back, Papyrus gets a little cranky if he doesn't have his bedtime story, I'd promise I'd read him Goldilizard and the three humans."

"kay" said Frisk before walking over to Savannah.

"Hey cheer up bucko" said Sans, noticing that Frisk appeared to be a little disappointed "we might bump into each other again at some point, I always get around." The two girls walked further on as San's went off in the opposite direction and Frisk was curious about why Papyrus wanted to have a bedtime story, he seemed to old for one.

"He's just a big kid at heart really" Savannah pointed out "and he's a big softy too." As the sisters continued on through the rest of waterfall, they encountered many different creatures which included an octopus like creature who introduced itself as Onionsan and he bragged about how once the barrier was broken, he was going to go and live in the ocean.

"It's going to be so amazing, I can't wait" he stated, his expression reminding Savannah and Frisk of an Anime character.

"That's great" Savannah simply said as they reached the end of the room "guess we'll be seeing you."

"Okay, well have a good time, in waterfallllllllllllllllllllllll" his voice echoed around the room as he went under the water and the next creature they met along the way was a timid mermaid like creature who went by the name of Shyren. They both encountered her when they heard her singing and found her singing voice to be one of the most amazing singing voices they have ever heard.

"Why don't you sing in front of a crowd of people?" Savannah asked "you have a really nice singing voice."

"Yeah it sounds like an angel's" Frisk implied as she innocently tilted her head "don't you like singing in front of people?" Shyren shook her head and told the two young girls that she felt too shy singing in front of a huge crowd of people.

"Maybe we can help you overcome your fear" Savannah suggested "I used to be like you, I had to sing once in front of a huge crowd of people but with a little help from my music teacher, I overcame my fear and I'm sure you will too. So what do you say?"

"If you wish" Shyren replied in a musical type voice and the three of them began to sing bringing various monsters from all over to watch the small concert and pretty soon, Shyren found herself a little more confident singing in front of other people.

"Do you feel better about singing in front of other people now?" Frisk asked "not scared anymore?"

"No, I feel a little more confident singing in front of other people now" shyren replied as the two girls smiled at her "thank you for helping me overcome my fear." Savannah and Frisk said goodbye to Shyren before continuing on through the caverns of waterfall and the next area had water leaking down from the ceilings which made it appear as if it was raining.

"How much further?" Frisk asked "my feet are getting tired."

"Let's just move on a little further then we'll take a break" Savannah replied, taking her sister's hand and leading her into the rainy area where on their way, they passed a statue of some sorts.

"What is it?" Frisk asked as she looked at the statue. It appeared some kind of animal of some sorts and water was raining down from the ceiling onto it and Frisk began looking around as if she was searching for something.

"What are you looking for?" Savannah asked.

"An umbrella" Frisk replied "I don't want the statue to get wet" she looked around a little more until she came across a trash can full of them "aha, here we are" the little girl skipped over to the umbrella can and Savannah couldn't help but smile, little kids like Frisk were simply adorable and she came skipping back a few seconds later carrying three umbrellas.

"Why do you have three?" Savannah questioned.

"There's one for the statue" Frisk replied as she placed one of the umbrellas on top of the statue and when she did, a tune of some sorts began to play from the statue "hey, what tune is this?"

"I don't know" Savannah replied as she walked over so that she could hear the tune a little bet "it sounds like a lullaby of some sorts but anyway, why do you have two extra umbrellas?"

"One for you" Frisk replied, handing Savannah one of the umbrellas she was holding "and one for me" she put the umbrella up over head "after all, we don't wanna get wet from all that water raining from the ceiling" she then skipped ahead and Savannah couldn't help but chuckle as she put her own umbrella up and followed her sister further into the rainy caverns where they both bumped into MK who was taking shelter under a small archway.

"What are you doing under there?" Frisk asked.

"I'm waiting here until the rain stops" MK replied "I don't want to get wet."

"Well I hate to be the bearer of bad news but I don't think it's going to be stopping any time soon" Savannah implied as MK groaned in response "but if you want, you can come with us and stand under one of our umbrellas."

"Really?" he asked beaming "okay, let's get going." He shared Frisk's umbrella with her and as the three of them continued walking through the rainy caverns, he kept talking about just how cool Undyne was.

"If I was a human" he stated "I'd wet the bed almost every night knowing she was going to beat me up." Both Savannah and Frisk wondered if they would be encountering Undyne again at any point, they hadn't seen her since she chased them down back at the board walk area and hoped that they wouldn't encounter her again. They carried on walking through the remaining caverns until they reached another umbrella can that was placed next to a cliff edge and the two girls put their umbrella's back before they walked over to the cliff.

"Looks like we'll have to go up there, I don't see any other way out of this place" Savannah implied.

"Yo, you guys wanna see Undyne right?" MK asked "here, I'll give you a lift up." He bent down, allowing Savannah to climb onto his shoulders so that she could get to the top of the cliff and soon, Frisk followed behind but MK remained on the ground below.

"Do you need any help getting up?" Frisk asked, peering over the side.

"Nah, you guys go on ahead" MK replied "I'll find a way around, trust me" he turned and ran off again, leaving the two sisters alone once again and they headed on forward, Frisk running ahead.

"Slow down Frisk" Savannah chuckled "we're not in any hurry." All of a sudden, there came a high pitched scream and Savannah ran forward out onto another board walk area to find three large blue spears sticking out the ground and Frisk was on the other side of them.

"Savannah" the small child whimpered, her voice shaking "help!" Savannah tried to get around the spears but it was no use, they were blocking her path, she couldn't get to her sister.

"I can't get through" Savannah replied. Frisk whimpered and looked down at the bottom platform causing Savannah to look down also and there stood Undyne, watching the two young girls like an animal watching it's prey. Suddenly, more spears shot up from underneath, nearly missing Frisk by almost an inch and the six year old had no choice but to run in the opposite direction as Undyne looked over in the direction Frisk was running in then back at Savannah who had a clear look of panic in her face but the warrior wasted no time and went in hot pursuit of little Frisk and she would deal with Savannah later.

"Hey, leave her alone, leave my sister alone" Savannah called out but both Frisk and Undyne had vanished into the darkness, leaving Savannah in a state of panic, she had to get help and fast, her little sister was in trouble.

Frisk ran as fast as her small legs would carry her, blue spears rapidly zipping up from underneath her and she could hear a growl of frustration from underneath her.

"Stop running you little twerp" Undyne snarled as the small girl above her ran all over the place, trying to find a way out of this dark maze like area and the six year old was terrified, she had been separated from her sister and she was being chased by the leader of the royal guard who was wanting to take her soul then she would probably go after Savannah and take her soul too and then use it to break the barrier to unleash all the monsters on the surface. All of a sudden, a sharp pain shot through the child's leg and she fell to the ground.

"Heh, looks like you won't be running now little punk" she heard Undyne say and Frisk looked at her leg to see a rip in her tights and blood trickling down, she had been struck by one of the spears but she was determined not to give up and tried to stand up but her leg was far too painful so the only thing she had to do was to crawl and she crawled along the platform, dragging her injured leg along with her until she reached a dead end and the child collapsed in exhaustion as the sound of clanking metal approached from behind her.

"Listen human" Undyne spoke as Frisk attempted to stand up "if you surrender yourself, it will make things a lot easier for both of us, surrender your soul or I'll take it by force" a large blue spear appeared in her hand and she began to make her way towards Frisk who had collapsed to the floor again but before she reached the girl, the platform that Frisk was laying on suddenly gave way and it went tumbling down into the dark abyss below, taking Frisk with it and the last thing she saw before she blacked out was Undyne peering over the edge.

It was possibly hours or minutes when Frisk finally came round and as she slowly opened her eyes, she was laying on something soft but could see nothing but darkness above her. The little girl tried to sit up but felt too weak to do so and her leg was in a huge amount of pain and she wondered if it was still bleeding but she didn't have the energy to sit up.

"Oh, you've fallen down haven't you and you're hurt" a boy's voice spoke from behind her and it sounded rather familiar but Frisk couldn't figure out where she had exactly heard it.

"Who's there?" Frisk asked as she coughed "where are you?"

"I'm behind you but don't try to sit up, you're hurt pretty bad ain't ya?" the young child's voice questioned as Frisk groaned in response "so what's your name then?"

"My name is" Frisk replied but the voice of the unknown speaker suddenly interrupted her before she got the chance to say her name.

"Chara huh, that's a nice name" the voice replied and Frisk was beginning to get scared now, there was something very off about all of this "my name is" vines began entangling themselves around Frisk's arms and her breathing quickened as the friendly sounding voice changed dramaticly "Flowey the Flower" Flowey appeared in front of a terrfied Frisk, wearing his sickly sweet smile like he had done went she and Savannah first encountered him back in the ruins.

"Howdy Chara" he said as his face slowly morphed into a much more sinister expression as little Frisk whimpered in fear "it's so good to see you again after all this time."