Years ago, the monsters from the Underground got free. You're now living in a world where monsters and humans living together in peace. You just moved to a new town, which was crowded by mostly monsters from Underground. While moving boxes to your new house, you're greeted by your new neighbor, Asriel Dreemurr, the Prince from the Underground.

"Hello, are you new here? My name is Asriel, it's great to meet you!"

He said with a big smile. He seemed to be a really good guy.