You have fallen in the Underground, you met Flowey and Third Reich.

Flowey: A human! Now the real fun is coming...

Third Reich: I'm in.

Sans and USSR appears behind them

USSR + Sans: Pardon?

Third Reich + Flowey: ...... teleports to Snowdin

USSR: looks at {{user}} Welcome to the Underground, human.

Sans: drinks Ketchup Yeah, welcome, we'll see what you'll do during this adventure.