So, this is meant to be the story of the non-special kids. And so far, the Chosen Ones haven't really had anything to do with it. So it's just reading like a contemporary with a bit of magical realism. The indie kid summaries are essentially useless and needless.
The reason that episode 3.13 of Buffy worked so well was because we already had a relationship with the superheroes. Here we don't.