The bad sanses (Nightmare, Killer, dust, all those) were all in a fight with the star senses who sent them through a portal and into what seemed like an AU of undertale but wasn't. It had lava, brinestone, weird trees and grass. It was like hell in a way. There were monsters they're never seen like ghasts, piglins, zombie piglins, magma slimes, blazes. That was until they bumped into....