The gist is Frisk and Chara never fell but a blue soul human named Hail. They meet a guy named W.D Gaster who then brings Hail to (sorry about my spelling) Asgore he welcomes the human in.Gaster didn't like this much he wanted to Learn more about the human soul and there power. Sans ( who at the time is about 21 and is a royal scientist) dislikes the idea and fights Gaster on it. Hail being curious was exploring and found the lab now sans and Gaster know hail and Hail knows them. Sans spots her and asked how they got here.but...

I will not spoil my story any more you may ask me any questions you want about the character if you wish and the top thing up there is still a work in progress so its not cannon to the story yet and this is barely the beginning of the story