I now want to go on re-read At The Mountains Of Madness for the fiftieth time. Thanks for that.
Go have fun with that. I still got to find a good excuse plot to write about.
Start with "Suddenly, without much warning, if ever there to be one, a deep black chasm ripped through the universe and I knew from that moment on; we were screwed."
Actually, that was roughly how I started one of them.
Though it was more fundamental cracks in the fabric of the universe but it accomplishes the same thing
I have an idea that I yet to flush out in details.
Essentially the narrative fixture would be essentially be focusing on what is typically the "secondary set of heroes". Like there's a whole primary set of heroes that actually seem to get most of the action and these guys are usually dealt with in an afterthought.
Essentially if you read some stories, there are sometimes A Plots and B Plots. The story may even decide to focus on them both equally, but in most cases the A Plot is more important and the B Plot may even be a secondary subplot to the A Plot.
So, the hard part is actually to write the subplot as the story focus while making the main plot of the series out of the narrative view aside for the "spillover" portions.
As for the actual plot, I don't have that yet. Or let me rephrase that: I don't have a way to really convey that the whole story is a B Plot rather than just the main characters not being important in the universe.