After the war between monsters and humans, all the monsters were sealed in the Underground, or so people thought. Some monsters managed to escape and find places to hide. 2 of these monsters were Lajos and Alma Gatti. Lajos was a close friend of Asgore and a valiant member of the first Royal Guard while Alma was was a devoted healer. On the surface with them were their children, Severi and Stravi. Stravi was only an infant when monsters were sealed and Severi was 10 years old. 8 years later, the Gatti family had made human friends on the surface, a family of 4, just like them. The children of the human family got along great with Stravi and Severi. They often shared stories with the monster children, including a certain story about Mt. Ebott.
"They say if someone climbs up it, they won't come back down." "Really? That's so weird!" "I know! But teacher says even if it's just a story, a lot of people have gone missing there." "You wanna know what I heard the adults say?" "What?" "They said we're going camping at the base of Mt. Ebott. I bet we could test the story then." "Nah. I don't think that's a good idea. You know the rules. We can't be seen too closely." "Yeah...You're right, Severi." "Hey. Let's go play and forget about this dumb story." "Yeah!"
Unfortunately, the story caught the interest of Stravi. She began to form a plan from that day on that would change her life forever. But change isn't always a bad thing, right? Sometimes it can lead to greater things.

"Mm..." Stravi slowly opened her eyes and sat up. "Where am I? And why does my head hurt?" Glancing around, the young cat monster took in her surroundings. "Oh yeah. I was exploring Mt. Ebott with Severi, Akiko and Hibiki when I tripped." She looked up, squinting at bright light source. "Did I...fall?" The young cat monster frowned and stood. "I need to find a way back home...Severi is going to be so mad at me. Akiko and Hibiki aren't gonna be thrilled with me either but ...Ugh." She groaned and pulled at her hair. "I need to get moving. But first, I need to find my backpack. I know I had it before I blacked out." Only a few foot away sat a pink backpack with a ribbon around one of the straps. "Ah ha! There it is." She grinned before picking it up and putting it on. "Okay. Now to go the only way I can go: forward."

"That nameplate was weird. Does it mean someone is buried where I landed?...I better not think about it" She sighed before starting up the staircase leading to a door. "Maybe I can find something to help me in there." Suddenly, the door to the ruins opened, revealing a large figure. It didn't take long for them to notice Stravi. "Oh goodness." She couldn't believe her eyes. Standing before her was another monster. "How did you get here, little one? Are you lost?" "I..." She was at a loss for words. Taking a deep breath, Stravi spoke again. "Who...are you?" "My name is Toriel, little one. I am the caretaker of these ruins. Who might you be?" "My name is Stravi Gatti." Toriel gasped and covered her mouth. "You're...You're Lajos and Alma's daughter, aren't you?" "Yes...How do you know my mother and father?" "They were close friends of mine. I thought...I thought they had died." Toriel uncovered her mouth. "Tell me, Stravi. Where have you and your family been living?" "We've been living on the surface." "On...On the surface? Oh goodness...Does that mean you fell down here?" "I think so..." "I am so sorry I wasn't there to greet you. I greet anyone who falls down here." "You do?" "Yes. Ah. Are you hungry at all?" "Yeah...a little." Stravi nodded as Toriel smiled and held out a hand. "Then please, come with me. I can make you something at my home." Stravi thought about it for a moment before taking Toriel's hand. "Okay...It's not like I have a better idea."

The young cat monster had been staying with Toriel for a while. Stravi didn't have the heart to tell her that she wanted to go home, to her brother and her human family. It took a few days but eventually, she gathered her courage and went up to Toriel, who was reading one of her books. "Miss Toriel?" "Yes, my child?" "I...Thank you again for letting me stay here, Miss Toriel." "You are certainly welcome, my child." "But..." "But what?" "..." Stravi took a deep breath. "I want to leave the ruins. I need to find a way back to my brother." The expression on Toriel's face changed as she closed her book. "I see...Please, come with me. Bring your backpack and some warm clothes." Toriel was quick to leave the room.

Stravi was barely able to keep up as they went down the stairs Toriel had told Stravi to stay away from. Eventually, Toriel stopped at a door. "Miss Toriel, what is this place?" "This is the end of the ruins. Beyond this door, lies the rest of the underground." "Really?" "Yes. I...know I cannot keep you here. You would be unhappy. Perhaps the answers you seek lie beyond here. You are not human but...I still worry." Stravi smiled softly. "I'll be fine, Miss Toriel. My family is full of tough monsters." "Yes. Of course. I know that all too well" That made Toriel smile. "There will be many monsters who knew your parents." "Really?" "Yes. Your parents were very well known. I am sure you will be able to learn more about them." "Thank you, Miss Toriel." Stravi gave Toriel a hug before opening the door. "Goodbye..."

Alphys was glancing at a monitor when something caught her eye. "S-Someone came out of the ruins?" The reptilian monster frowned. "I d-don't think I've seen that girl before. I need to tell Doctor Gaster about this." "I'm already aware, Alphys. I can see these monitors too, you know." A voice behind her caused her to jump. "D-Doctor Gaster! What do we...do?" "We inform Asgore and Undyne of course." "O-Oh. Of course, sir." The tall skeleton nodded and started walking away, gesturing for his assistant to follow.

"Brr...No wonder Toriel told me to bring some warm clothes. It's cold out here. I've never seen so much snow before." The young cat monster smiled brightly. "I wish Severi could see this..." The scenery all around had her in complete awe. She had never really been outside before. After all, she and her brother couldn't be seen by other humans. She didn't know what would happen if she had been caught. All anyone would ever tell her is that it wouldn't be good. "Hm...I wonder how long I'll have to walk until I find someone else...or at least someplace warm." Her question would soon be answered, in the form of a bright stranger.

"Hm? A child? I haven't seen you around her before." "Oh. Hello...My name is Stravi. Who are you, mister?" "My name is Grillby." The bright stranger answered. "Are you lost?" "I...think so? I've never been here before." "I see...Are you hungry?" "A little, yes." Grillby held a hand out. "Well why don't we fix that, Stravi? I know a place in a nearby town we could go." "Really?" "Yes." "...Okay." The young monster took the flame monster's hand with a smile. "You're really nice, mister. Thank you." "It's really no trouble. Perhaps I could introduce you to a few friends. I have a feeling you'd like them." "That'd be swell."