Imagine if you lived in Sunnydale, or its equivalent, but weren't a part of Buffy the Vampire Slayer's Scooby Gang. All that stuff would still be happening but not to you, although you might still notice things going on, especially if you went to the same school.
In this novel, we see the goings-on from the viewpoints of a bunch of (mostly) ordinary kids, who have enough problems without worrying about whether evil beings from another dimension are trying to take over the world. The Chosen Ones are known as indie kids. Their adventures are happening off the main page, though we do get a paragraph or two about it at the start of each chapter.
Actually, I have always loved Buffy because, in the middle of all those vampire and demon invasions, characters would be shrieking,"You stole my boyfriend!"
In this case, in an unnamed small town, which does have semi-regular paranormal events(soul-sucking ghosts, vampire romances, a plague of gods and goddesses), we see what's happening elsewhere in the town, although the paranormal events do impact on the lives of those who are just trying to finish their exams, get a date to the prom and overcome truly serious anorexia and OCD problems. Mikey, the hero, is the one with OCD, his sister is a recovering anorexic, their father an alcoholic and their mother a politician who does care about them, but is mostly worried about her current campaign. These problems do have to be overcome, even as they pray for their school not to be burned down by the struggle between indie kids and paranormal creatures...again. (It's only been eight years since the last time!) This is definitely a gentle poke at Buffy.
Despite all that, there is a should-be indie kid among them, Mikey's best friend Jared, a demigod, whose grandmother was the goddess of cats - part of the plague of gods, who had settled down with a mortal before returning to the divine realms. Jared is such a nice boy! And cats adore him, including mountain lions. But he is trying to live a normal life, apart from healing cats and the occasional human.
It isn't as funny as it sounds; there is gentle humour as the author pokes fun at the current passion for YA paranormal books, but there are enough serious problems to make you think.
Anyway, I enjoyed it. It's my first Patrick Ness book, though I do have another on my iPad, to be read later.