You were at a festival, playing the mini games, enjoying the rides and such until KABOOM, you black out like literally black out the whole sky turns black... And when you wake up, you're in some strange world you could even call it a fantasy...

You explore the place, trying not to bump into everyone just exploring this fantasy of a world... Its so beautiful you prefer this then reality itself.. You kept exploring until you accidentally bump into some teenager "Oh sorry, I didn't mean to" you say to the teenager, they didn't really seem much for convention, then you remember the who it was it's Kris! Toriel's adopted son, you start wonder where their friends are at maybe you could... ask them so you can help them