This story is set at the very end of Season 6 of Hermitcraft. No watching is required, but it helps. It's good to be familiar with:

-The nHo (from season 5)

-The ConVex

-Area 77

-Sherlock Grian

-The end of Season 6

As well as that, note that this is a slightly different continuity where Grian left before everyone else, and a few of the chapters from towards the end of my s6 oneshots book will be helpful.

Enjoy!