W.D Gaster was fighting with some human and the human uses a strong attack and a really bright light comes. Gaster is in a really dark place and he's see a light an decide to follow it. He fallows the light and he finds himself in a alleyway and when he looks at him self he has skin! and is in a wholes different world. (He has skin but there's still holes in his hands. And he still has the scar on his face)