I'm going something more articulate about this later, but since this is now a story in the popular press, here are the last few pages of the latest (and, for now, penultimate) issue of Fantastic Four (Spoilers, obviously). Ordinarily I find the Fantastic Four to be really boring. This... is not.
Since I don't read Fantastic Four (because of its usual soul crushing boringness), I don't completely understand the context of all this. But honestly, its The Human Torch making a last stand against a billion monsters from another dimension. Thats really all you need to know.
From Fantastic Four #587 by Jonathon Hickman (Writer) and Steve Epting (Penciler)
Looks like I'm going to have to go back and read the last couple months of Fantastic Four. If this is any indication, it probably won't be boring.