Like the original Balderstone (which you don't have to play to understand this), you are at a gathering of horror writers who tell 'stories' which are minigames. The order of the stories is randomised.
The games are coded well, and the tone varies a lot, sometimes dramatic, sometimes silly, sometimes frightening, all sort of tongue in cheek. Many of them have twists, whether geographical or as a meta-narrative etc.
I came, I saw, I had fun, the stories aren't really related, so why don't you just go try it out and see for yourself?