Dottore had supposedly created a portal to a different world.

Naturally, the Fatui doubted him.

As proof, all of the Fatui went into the portal so that Dottore could prove that it really was a portal to another world.

To make life easier, by all of the Fatui, I really just mean Dottore, Pantalone and Childe.

Anyways, what world do they find themselves in?

Well, a world with a zombie apocalypse.

How...fun.

You were in this world. And you saw the odd looking trio.